JoVE Immunology and Infection
Dissecting Host-virus Interaction in Lytic Replication of a Model Herpesvirus
1Center for Autophagy Research, Department of Internal Medicine, UT Southwestern Medical Center, 2Department of Microbiology, UT Southwestern Medical Center
We describe a protocol to identify key roles of host signaling molecules in lytic replication of a model herpesvirus, gamma herpesvirus 68 (γHV68). Utilizing genetically modified mouse strains and embryonic fibroblasts for γHV68 lytic replication, the protocol permits both phenotypic characterization and molecular interrogation of virus-host interactions in viral lytic replication.
JoVE Clinical and Translational Medicine
MicroRNA Detection in Prostate Tumors by Quantitative Real-time PCR (qPCR)
1Department of Laboratory Medicine & Pathobiology, University of Toronto, 2Division of Urology, Sunnybrook Health Sciences Centre, Toronto, Canada, 3Department of Anatomic Pathology, Sunnybrook Health Sciences Centre, Toronto, Canada, 4Biological Sciences, Sunnybrook Research Institute
Quantitative Real Time polymerase chain reaction (qPCR) is a rapid and sensitive method to investigate the expression levels of various microRNA (miRNA) molecules in tumor samples. Using this method expression of hundreds of different miRNA molecules can be amplified, quantified, and analyzed from the same cDNA template.
JoVE General
Reprogramming Human Somatic Cells into Induced Pluripotent Stem Cells (iPSCs) Using Retroviral Vector with GFP
Yale Stem Cell Center, Department of Genetics, Yale School of Medicine
A method to generate human induced pluripotent stem cells (iPSCs) via retrovirus-mediated ectopic expression of OCT4, SOX2, KLF4 and MYC is described. A practical way to identify human iPSC colonies based on GFP expression is also discussed.
JoVE General
Using an Automated Cell Counter to Simplify Gene Expression Studies: siRNA Knockdown of IL-4 Dependent Gene Expression in Namalwa Cells
Gene Expression Division, Bio-Rad Laboratories
This procedure describes a quick and easy workflow to introduce siRNA into difficult to transfect cell lines and follow gene expression by real-time PCR. Use of an automated cell counter, multi-well electroporation plate, and automated electrophoresis station provide quick and reliable results without the need for expensive robotic handling.
JoVE General
Dissection of Hippocampal Dentate Gyrus from Adult Mouse
1Japan Science and Technology Agency, Core Research for Evolutionary Science and Technology (CREST), 2Division of Systems Medical Science, Institute for Comprehensive Medical Science, Fujita Health University, 3Department of Psychiatry, Graduate School of Medicine, Kyoto University, 4Genetic Engineering and Functional Genomics Group, Horizontal Medical Research Organization, Graduate School of Medicine, Kyoto University, 5Center for Genetic Analysis of Behavior, National Institute for Physiological Sciences, National Institutes of Natural Sciences
A dissection technique for removal of the dentate gyrus from adult mouse under a stereomicroscope was demonstrated in this video-recorded protocol.
JoVE Clinical and Translational Medicine
Characterization of Molecular Mechanisms of In vivo UVR Induced Cataract
1St. Erik's Eye Hospital, Karolinska Institutet, 2Gullstrand lab, Section for Ophthalmology, Department of Neuroscience, Uppsala University
Cataract is the leading cause of blindness in the world. Solar ultraviolet radiation (UVR) is the main risk factor for cataract development. An animal model of far UVR-B induced cataract was developed. In this article we describe methods for investigation of cataract formation: exposure to UVR, quantitative RT-PCR and immunohistochemistry.
JoVE Immunology and Infection
Development of a Negative Selectable Marker for Entamoeba histolytica
Division of Infectious Disease and International Health, University of Virginia Health System
We report development of a negative selection system in E. histolytica based upon transgenic expression of a chimeric protein (FCU1) and selection with the prodrug 5-fluorocytosine. The FCU1 protein is a fusion of yeast cytosine deaminase and uracil phosphoribosyltransferase. Expression of FCU1 resulted in increased E. histolytica sensitivity towards 5-fluorocytosine.
JoVE Clinical and Translational Medicine
The Polyvinyl Alcohol Sponge Model Implantation
1Department of Pathology, Microbiology and Immunology, Vanderbilt University School of Medicine, 2The Department of Veterans Affairs Medical Center, 3Internal Medicine, Vanderbilt University School of Medicine
A useful tool to analyze the effects of drugs, growth factors, and/or manipulated cells in an animal model of wound repair is described. This technique utilizes the properties of a polyvinyl alcohol (PVA) sponge to deliver and contain the desired treatment and also provide a platform to be excised and analyzed.
JoVE General
Isolation and Purification of Drosophila Peripheral Neurons by Magnetic Bead Sorting
1Department of Molecular and Microbiology, George Mason University, 2Krasnow Institute for Advanced Study, George Mason University
In this video-article we present a method for the isolation and purification of Drosophila peripheral neurons using a fast magnetic bead assisted cell sorting strategy. RNA obtained from the isolated cells can be readily used for downstream applications including microarray analyses.
JoVE Clinical and Translational Medicine
Quantitative Analysis of Cancer Metastasis using an Avian Embryo Model
1Department of Pathology, Vanderbilt University, 2Departments of Oncology, Surgery and Medical Biophysics, London Regional cancer program
Using quantitative PCR, we demonstrate how the well-established chick CAM model can be used to quantitatively analyze the metastasis of human tumor cells to distant organs.
JoVE Clinical and Translational Medicine
DNA Vector-based RNA Interference to Study Gene Function in Cancer
1Department of Cancer Biology and Comprehensive Cancer Center, Wake Forest University School of Medicine, 2Department of Pathology and Comprehensive Cancer Center, Wake Forest University School of Medicine
RNA interference (RNAi) possesses many advantages over gene knockout and has been broadly used as a tool in gene functional studies. The invention of DNA vector-based RNAi technology has made long term and inducible gene knockdown possible, and also increased the feasibility of gene silencing in vivo.
JoVE Immunology and Infection
Multiplex Detection of Bacteria in Complex Clinical and Environmental Samples using Oligonucleotide-coupled Fluorescent Microspheres
1Saskatoon Research Centre, Agriculture and Agri-Food Canada, 2Department of Veterinary Microbiology, University of Saskatchewan, 3Plant Biotechnology Institute, National Research Council of Canada
We describe a multiplex method for the detection of microorganisms within a sample using oligonucleotide-coupled fluorescent beads. Amplicon from all organisms within a sample is hybridized to a panel of probe-coupled beads. A Luminex or Bio-Plex instrument is used to query each bead for bead type and hybridization signal.
JoVE Neuroscience
Strategies for Study of Neuroprotection from Cold-preconditioning
Department of Neurology, The University of Chicago Medical Center
We seek to define the neural immune signaling responsible for cold-preconditioning as means to identify novel targets for therapeutics development to protect brain before injury onset. We present strategies for such work that require biological systems, experimental manipulations plus technical capacities that are highly reproducible and sensitive.
JoVE Neuroscience
Laser Capture Microdissection of Enriched Populations of Neurons or Single Neurons for Gene Expression Analysis After Traumatic Brain Injury
Department of Anesthesiology, University of Texas Medical Branch
We describe how to use laser capture microdissection (LCM) to obtain enriched populations of hippocampal neurons or single neurons from frozen sections of the injured rat brain for subsequent gene expression analysis using quantitative real time PCR and/or whole-genome microarrays.
JoVE General
Studying the Effects of Matrix Stiffness on Cellular Function using Acrylamide-based Hydrogels
Department of Pharmacology, University of Pennsylvania
The effect of substrata stiffness on cellular function can be modeled in vitro using polyacrylamide hydrogels of varying compliances.
JoVE Neuroscience
Laser Capture Microdissection of Drosophila Peripheral Neurons
1Department of Molecular and Microbiology, George Mason University, 2Krasnow Institute for Advanced Study, George Mason University
In this video-article we present a method for isolating single or multiple Drosophila da neurons from third instar larvae using the infrared capture (IR) class of Laser Capture Microdissection (LCM). RNA obtained from the isolated neurons can be readily used for downstream applications including qRT-PCR or microarray analyses.
JoVE General
Determining Genetic Expression Profiles in C. elegans Using Microarray and Real-time PCR
Department of Biological Sciences, Southwestern Oklahoma State University
Microarray analysis was conducted to determine genetic expression profiles in C. elegans, and real-time PCR was used to validate and quantify microarray data.
JoVE Clinical and Translational Medicine
Detection and Genogrouping of Noroviruses from Children's Stools By Taqman One-step RT-PCR
1Laboratorio de Investigación y Desarrollo (LID), Universidad Peruana Cayetano Heredia, 2Bloomberg School of Public Health, Johns Hopkins University, 3Laboratorio de Diagnostico Molecular, Facultad de Medicina, University of Concepcion,Chile, 4University of California San Diego School of Medicine
A One-Step RT-PCR assay for detection and genogroup identification of Norovirus isolates from children’s stools, that utilizes primers and TaqMan probes specific to the open reading frame 1 (ORF1)-ORF2 junction region, the most conserved region of the Norovirus genome is described. A non-commercial, cost-effective RNA extraction method is detailed.
JoVE Clinical and Translational Medicine
Using Quantitative Real-time PCR to Determine Donor Cell Engraftment in a Competitive Murine Bone Marrow Transplantation Model
Division of Hematology-oncology, Department of Medicine, Medical University of South Carolina
Determining donor cell engraftment presents a challenge in mouse bone marrow transplant models that lack well-defined phenotypical markers. We described a methodology to quantify male donor cell engraftment in female transplant recipient mice. This method can be used in all mouse strains for the study of HSC functions.
JoVE Neuroscience
Single-cell Profiling of Developing and Mature Retinal Neurons
Department of Genetics, Development and Cell Biology, Neuroscience Program, Iowa State University
A method for the isolation of single retinal cells and subsequent amplification of their cDNAs is described. Single-cell transcriptomics reveals the degree of cellular heterogeneity present in a tissue and uncovers new marker genes for rare cell populations. The accompanying protocol can be adjusted to suit many different cell types.
JoVE General
Chromatin Immunoprecipitation Assay for Tissue-specific Genes using Early-stage Mouse Embryos
Department of Cell Biology, University of Massachusetts Medical School
We demonstrate a chromatin immunoprecipitation (ChIP) method to identify factor interactions at tissue-specific genes during or after the onset of tissue-specific gene expression in mouse embryonic tissue. This protocol should be widely applicable for the study of tissue-specific gene activation as it occurs during normal embryonic development.
JoVE Bioengineering
Increasing cDNA Yields from Single-cell Quantities of mRNA in Standard Laboratory Reverse Transcriptase Reactions using Acoustic Microstreaming
1Florey Neuroscience Institutes and Centre for Neuroscience, University of Melbourne, 2Fluid Dynamics Group, CSIRO Materials Science and Engineering, 3Swinburne University of Technology, Faculty of Engineering and Industrial Sciences
We describe a novel method for increasing cDNA yield from single-cell quantities of mRNA in otherwise standard laboratory reverse transcription reactions. The novelty resides in the use of a micromixer, which utilizes the phenomenon of acoustic microstreaming, to mix fluids at microliter scales more effectively than shaking, vortexing or trituration.
JoVE General
Quantitative, Real-time Analysis of Base Excision Repair Activity in Cell Lysates Utilizing Lesion-specific Molecular Beacons
1Department of Pharmacology & Chemical Biology, University of Pittsburgh School of Medicine, 2Hillman Cancer Center, University of Pittsburgh Cancer Institute, 3Department of Experimental Therapy, The Netherlands Cancer Institute, 4Department of Human Genetics, University of Pittsburgh School of Public Health
We describe a method for the quantitative, real-time measurement of DNA glycosylase and AP endonuclease activities in cell nuclear lysates. The assay yields rates of DNA Repair activity amenable to kinetic analysis and is adaptable for quantification of DNA Repair activity in tissue and tumor lysates or with purified proteins.
JoVE Immunology and Infection
Development of Cell-type specific anti-HIV gp120 aptamers for siRNA delivery
1Department of Molecular and Cellular Biology, Beckman Research Institute of City of Hope, 2Graduate School of Biological Sciences, Beckman Research Institute of City of Hope, 3Shared Resource-DNA/RNA Peptide, Beckman Research Institute of City of Hope
Several 2’-Fluoro RNA aptamers against HIV-1Ba-L gp120 with nanomole affinity are isolated from a RNA library by in vitro SELEX procedure. A new dual inhibitory function anti-gp120 aptamer-siRNA chimera is created and shows considerable promise for systemic anti-HIV therapy.
JoVE Immunology and Infection
Identifying Dysregulated Genes Induced by Kaposi's Sarcoma-associated Herpesvirus (KSHV)
Host cell factors play a critical role in the establishment and maintenance of Kaposi's sarcoma (KS). We outline methods to identify host cell factors altered in KSHV-infected DMVEC cells, and in KS tumor tissue. Cellular genes altered by virus will serve as potential target(s) for novel therapeutics.
JoVE Neuroscience
Modeling Neural Immune Signaling of Episodic and Chronic Migraine Using Spreading Depression In Vitro
1Department of Neurology and Committee on Neurobiology, The University of Chicago Medical Center, 2Department of Neurology, The University of Chicago Medical Center
Migraine and its transformation to chronic migraine are immense healthcare burdens in need of improved treatment options. We seek to define how neural immune signaling modulates the susceptibility to migraine, modeled in vitro using spreading depression in hippocampal slice cultures, as a means to develop novel therapeutic targets.
JoVE General
Naïve Adult Stem Cells Isolation from Primary Human Fibroblast Cultures
1Department of Dermatology and Institute for Medical Engineering, Technische Universität München, 2Department of Dermatology and Allergology, Technische Universität München
We report a method to isolate naïve multipotent skin-derived precursor (SKP) cells from primary human fibroblast cultures. We show that these SKPs derived from fibroblast cultures share similar stem cell properties to the ones derived directly from human skin biopsies. These cells express the neural crest marker, nestin, in addition to the multipotent markers such as OCT4 and Nanog.
JoVE General
Bacterial Delivery of RNAi Effectors: Transkingdom RNAi
Institute of Pathology, Charité Campus Mitte
For development of RNA interference (RNAi)-based therapies, a novel strategy was developed, transkingdom RNAi (tkRNAi). This technology uses non-pathogenic bacteria to produce and deliver therapeutic short hairpin RNA (shRNA) into target cells. Here, tkRNAi was successfully applied for reversal of classical ABCB1-mediated multidrug resistance (MDR) of cancer cells.
JoVE Bioengineering
Impulsive Pressurization of Neuronal Cells for Traumatic Brain Injury Study
Department of Engineering Mechanics, University of Nebraska-Lincoln
A novel impulsive cell pressurization experiment has been developed using a Kolsky bar device to investigate the molecular/cellular mechanisms of blast-induced traumatic brain injury.
JoVE General
Profiling of Pre-micro RNAs and microRNAs using Quantitative Real-time PCR (qPCR) Arrays
We will demonstrate the setup and analysis of pre-microRNA 96-well arrays for QPCR using a robot as well as by hand with a Thermo Scientific Matrix multichannel pipette.
JoVE General
DNA Methylation: Bisulphite Modification and Analysis
1Epigenetics Group, Cancer Research Program, Garvan Institute of Medical Research, 2St Vincent's Clinical School, University of NSW
The gold standard for DNA methylation analysis is genomic sequencing of bisulphite converted DNA. This method takes advantage of the increased sensitivity of cytosine compared with 5-methylcytosine (5-MeC) to bisulphite deamination under acidic conditions. Unmethylated cytosines can be distinguished from methylated cytosines after PCR amplification of the target genomic DNA.
JoVE General
A PCR-based Genotyping Method to Distinguish Between Wild-type and Ornamental Varieties of Imperata cylindrica
1Department of Biological Sciences, The University of Alabama, Huntsville, 2USDA-APHIS-PPQ, Center for Plant Health Science and Technology
We provide a cost-effective and rapid molecular genotyping protocol that employs variety-specific PCR primers that target DNA sequence differences within the chloroplast trnL-F spacer region to differentiate between varieties of Imperata cylindrica (cogongrass) that cannot be distinguished by morphology alone. These varieties include the federally listed noxious weed, cogongrass and closely-related, wide-spread ornamental variety, I. cylindrica var. koenigii (Japanese blood grass).
JoVE General
Monitoring Cell-autonomous Circadian Clock Rhythms of Gene Expression Using Luciferase Bioluminescence Reporters
Department of Biological Sciences, The University of Memphis
Circadian clocks function within individual cells, i.e., they are cell-autonomous. Here, we describe methods for generating cell-autonomous clock models using non-invasive, luciferase-based real-time bioluminescence technology. Reporter cells provide tractable, functional model systems for studying circadian biology.
JoVE General
Chromatin Immunoprecipitation (ChIP) using Drosophila tissue
Department of Biology, Johns Hopkins University
Recently high-throughput sequencing technology has greatly increased sensitivity of Chromatin Immunoprecipitation (ChIP) experiment and prompted its application using purified cells or dissected tissue. Here we delineate a method to use ChIP technique with Drosophila tissue, which can address the endogenous chromatin state in a well-characterized biological system.
JoVE Immunology and Infection
Detection of MicroRNAs in Microglia by Real-time PCR in Normal CNS and During Neuroinflammation
Center for Neurologic Diseases, Brigham and Women's Hospital, Harvard Medical School
Microglia are resident macrophages that provide the first line of defense and immune surveillance of the central nervous system. MicroRNAs are regulatory molecules that play an important role in many physiological processes including activation and differentiation of macrophages. In this article, we describe the method for measurement of microRNAs in microglia.
JoVE General
Isolation and Differentiation of Stromal Vascular Cells to Beige/Brite Cells
1UCSF Diabetes Center and Department of Cell and Tissue Biology, University of California, San Francisco, 2Department of Biology, University of Copenhagen, Denmark, 3National Institute of Nutrition and Seafood Research, Bergen, Norway
Primary white preadipocytes isolated from white adipose tissues in mice can be differentiated into beige/brite cells. Presented here is a reliable cellular model system to study the molecular regulation of "browning" of white fat.
JoVE Immunology and Infection
A Primary Neuron Culture System for the Study of Herpes Simplex Virus Latency and Reactivation
1Department of Microbiology, New York University School of Medicine, 2Molecular Neurobiology Program, Skirball Institute for Biomolecular Medicine, New York University School of Medicine, 3Department of Otolaryngology, New York University School of Medicine, 4Department of Cell Biology, New York University School of Medicine, 5Department of Physiology and Neuroscience, New York University School of Medicine, 6Department of Psychiatry, New York University School of Medicine, 7Center for Neural Science, New York University School of Medicine
The protocol describes an efficient and reproducible model system to study herpes simplex virus type 1 (HSV-1) latency and reactivation. The assay employs homogenous sympathetic neuron cultures and allows for the molecular dissection of virus-neuron interactions using a variety of tools including RNA interference and expression of recombinant proteins.
JoVE General
Expression Analysis of Mammalian Linker-histone Subtypes
We describe a set of assays to analyze expression levels of H1 linker histones. mRNA of individual H1 genes are quantitatively measured by random primer based reverse transcription followed by real-time PCR, whereas protein quantification of H1 histones is achieved by HPLC analysis.
JoVE Immunology and Infection
Co-culture Models of Pseudomonas aeruginosa Biofilms Grown on Live Human Airway Cells
1Department of Physiology, Dartmouth College, 2Department of Biology, Indiana University Purdue University Indianapolis
This paper describes different methods of growing Pseudomonas aeruginosa biofilms on cultured human airway epithelial cells. These protocols can be adapted to study different aspects of biofilm formation, including visualization of the biofilm, staining of the biofilm, measuring the colony forming units (CFU) of the biofilm, and studying biofilm cytotoxicity.
JoVE Immunology and Infection
Quantitative Measurement of the Immune Response and Sleep in Drosophila
Center for Sleep and Circadian Neurobiology, University of Pennsylvania Perelman School of Medicine
To understand a link between the immune response and behavior, we describe a method to measure locomotor behavior in Drosophila during bacterial infection as well as the ability of flies to mount an immune response by monitoring survival, bacterial load, and real-time activity of a key regulator of innate immunity, NFκB.
JoVE Clinical and Translational Medicine
Mouse Model of Surgically-induced Endometriosis by Auto-transplantation of Uterine Tissue
1Obstetrics, Gynecology and Women’s Health and Division of Biological Sciences, University of Missouri, 2Obstetrics, Gynecology and Women’s Health and Animal Sciences, University of Missouri
A description of the surgical induction of endometriosis in mice and rats by auto-transplantation of uterine tissue to the arterial cascade of the intestinal mesentery.
JoVE Immunology and Infection
An In vitro Co-infection Model to Study Plasmodium falciparum-HIV-1 Interactions in Human Primary Monocyte-derived Immune Cells
Infectious Disease Research Center, CHUL (CHUQ), Quebec City, Quebec, Canada
We have developed an in vitro malaria-HIV-1 co-infection model to study the impact of Plasmodium falciparum on the HIV-1 replicative cycle in human primary monocyte-derived macrophages. This versatile system can easily be adapted to other primary cell types susceptible to HIV-1 infection.
JoVE General
Primary Dissociated Midbrain Dopamine Cell Cultures from Rodent Neonates
Department of Pharmacology and Experimental Therapeutics, Tufts University
Primary dissociated midbrain dopamine cell cultures allow for the study of presynaptic characteristics of dopamine neurons. They can be used to monitor real-time dopamine release kinetics and protein/mRNA levels of regulators of dopamine exocytosis. Here, we show you how to generate these cultures from rodent neonates.
JoVE General
Detection of Histone Modifications in Plant Leaves
1Department of Botany, RWTH Aachen University, 2Department of Plant Physiology, RWTH Aachen University, 3Department of Botany, Leibniz University
A reliable and useful approach to detect histone modifications on specific plant genes is described. The approach combines chromatin immunoprecipitation (ChIP) and real-time quantitative PCR. It allows detection of histone modifications on specific genes with a role in diverse physiological processes.
JoVE General
RNA-seq Analysis of Transcriptomes in Thrombin-treated and Control Human Pulmonary Microvascular Endothelial Cells
Children's Mercy Hospital and Clinics, School of Medicine, University of Missouri-Kansas City
This protocol presents a complete and detailed procedure to apply RNA-seq, a powerful next-generation DNA sequencing technology, to profile transcriptomes in human pulmonary microvascular endothelial cells with or without thrombin treatment. This protocol is generalizable to various cells or tissues affected by different reagents or disease states.
JoVE General
Analysis of Gene Expression in Emerald Ash Borer (Agrilus planipennis) Using Quantitative Real Time-PCR
Department of Entomology, The Ohio State University
Quantitative real-time PCR (qRT-PCR) is an effective tool to diagnose mRNA levels in different insect tissues and developmental stages. In this report we show the use of qRT-PCR to ascertain mRNA levels in different larval tissues and developmental stages of the invasive insect species, emerald ash borer.
JoVE Clinical and Translational Medicine
Technique to Collect Fungiform (Taste) Papillae from Human Tongue
1Department of Basic Science and Craniofacial Biology, College of Dentistry, New York University, 2Department of Internal Medicine and Department of Psychiatry, School of Medicine, Washington University in St. Louis, 3Veterans Affairs Medical Center, 4School of Dental Medicine, Department of Biochemistry, University of Pennsylvania-School of Medicine, 5 , Monell Chemical Senses Center, 6Monell Chemical Senses Center
Knowledge of molecular mechanisms underlying gustatory transduction has recently enjoyed significant advances, largely due to using animal models. However, the wide diversity in taste sensitivity and specificity among mammals warrants studies in human tissue. We describe a biopsy technique to collect living taste cells from the papillae on human tongue.
JoVE General
Laser Microdissection Applied to Gene Expression Profiling of Subset of Cells from the Drosophila Wing Disc
Dipartimento di Biologia Strutturale e Funzionale, University of Naples
Laser microdissection was applied to analyse gene expression profiling in specific compartments of Drosophila wing disc subjected to localised RNAi in vivo. RNA extracted from equivalent areas of silenced and unsilenced compartments was analysed by quantitative RT-PCR to determine comparative gene expression profiling within the context of native tissue microecology.
JoVE General
Quantitative Real-Time PCR using the Thermo Scientific Solaris qPCR Assay
Thermo Scientific Solaris qPCR Products
The Solaris qPCR Gene Expression Assays are novel pre-designed qPCR primer/probe combinations designed to simplify the qPCR process without sacrificing the specificity and robustness of the assay.
JoVE Immunology and Infection
Measurement of γHV68 Infection in Mice
Department of Molecular Microbiology and Immunology, University of Southern California, Los Angeles
γ-Herpesviruses (γ-HVs) establish life-long persistency in their host. Infection of mice with γ-HV68 provides a genetically tractable in vivo model for the characterization of the lifecycle/pathogenesis of γHVs. This protocol describes the detection and quantitation of γHV68 infection at acute and latent stages following infection by plaque-forming, infectious center, and qPCR assays.
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