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Phenylmethylsulfonyl Fluoride: An enzyme inhibitor that inactivates Irc-50 arvin, subtilisin, and the fatty acid synthetase complex.

Human Lung Dendritic Cells: Spatial Distribution and Phenotypic Identification in Endobronchial Biopsies Using Immunohistochemistry and Flow Cytometry

1Immunology and Allergy Unit, Department of Medicine Solna, Karolinska Institutet, 2Division of Medicine, Department of Public Health and Clinical Medicine, Umeå University, 3Divison of Infectious Diseases, Department of Clinical Microbiology, Umeå University

JoVE 55222


 Immunology and Infection

Multifunctional, Micropipette-based Method for Incorporation And Stimulation of Bacterial Mechanosensitive Ion Channels in Droplet Interface Bilayers

1Department of Mechanical Engineering, Virginia Polytechnic Institute and State University, 2School of Biomedical Engineering and Sciences, Virginia Polytechnic Institute and State University, 3Department of Biology, University of Maryland, 4College of Engineering, University of Georgia, 5Department of Engineering Sciences and Mechanics, Virginia Polytechnic Institute and State University

JoVE 53362


 Biology

Genome-wide Mapping of Drug-DNA Interactions in Cells with COSMIC (Crosslinking of Small Molecules to Isolate Chromatin)

1Department of Biochemistry, University of Wisconsin–Madison, 2Department of Electrical and Computer Engineering, University of Wisconsin–Madison, 3Graduate Program in Cellular and Molecular Biology, University of Wisconsin–Madison, 4The Genome Center, University of Wisconsin–Madison

JoVE 53510


 Biology

Peptide and Protein Quantification Using Automated Immuno-MALDI (iMALDI)

1University of Victoria-Genome BC Proteomics Centre, 2Jewish General Hospital, McGill University, 3Dept of Biochemistry and Microbiology, University of Victoria, 4Proteomics Centre, Segal Cancer Centre, Lady Davis Institute, Jewish General Hospital, McGill University, 5Gerald Bronfman Department of Oncology, Jewish General Hospital

JoVE 55933


 Chemistry

Sample Preparation for Mass Spectrometry-based Identification of RNA-binding Regions

1Epigenetics Institute, University of Pennsylvania Perelman School of Medicine, 2Department of Cell and Developmental Biology, University of Pennsylvania Perelman School of Medicine, 3Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, 4Graduate Group in Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine

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JoVE 56004


 JoVE In-Press

Quantitative Analysis of Chromatin Proteomes in Disease

1Department of Anesthesiology, David Geffen School of Medicine at UCLA, 2Department of Medicine, David Geffen School of Medicine at UCLA, 3Department of Physiology, David Geffen School of Medicine at UCLA, 4Department of Internal Medicine, Nora Eccles Harrison Cardiovascular Research and Training Institute, University of Utah

JoVE 4294


 Medicine

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Identification of Intracellular Signaling Events Induced in Viable Cells by Interaction with Neighboring Cells Undergoing Apoptotic Cell Death

1Section of Nephrology, Department of Medicine, University of Illinois at Chicago, 2Section of Nephrology, Department of Medicine, Jesse Brown Veterans Affairs Medical Center, 3Department of Biology, Kutztown University of Pennsylvania, 4Division of Rheumatology, Department of Medicine, Research Institute of the McGill University Health Centre, 5Department of Microbiology & Immunology, University of Illinois at Chicago

JoVE 54980


 Biology

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Calibration Curves

JoVE 10188

Source: Laboratory of Dr. B. Jill Venton - University of Virginia

Calibration curves are used to understand the instrumental response to an analyte and predict the concentration in an unknown sample. Generally, a set of standard samples are made at various concentrations with a range than includes the unknown of interest and the instrumental response at each concentration is recorded. For more accuracy and to understand the error, the response at each concentration can be repeated so an error bar is obtained. The data are then fit with a function so that unknown concentrations can be predicted. Typically the response is linear, however, a curve can be made with other functions as long as the function is known. The calibration curve can be used to calculate the limit of detection and limit of quantitation. When making solutions for a calibration curve, each solution can be made separately. However, that can take a lot of starting material and be time consuming. Another method for making many different concentrations of a solution is to use serial dilutions. With serial dilutions, a concentrated sample is diluted down in a stepwise manner to make lower concentrations. The next sample is made from the previous dilution, and the dilution factor is often kept constant. The advantage is that only one


 Essentials of Analytical Chemistry

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Non-invasive Imaging of Acute Allograft Rejection after Rat Renal Transplantation Using 18F-FDG PET

1Department of Internal Medicine D, Experimental Nephrology, University of Münster, 2Department of Nuclear Medicine, University of Münster, 3European Institute for Molecular Imaging, University of Münster

JoVE 4240


 Medicine

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Biotinylated Cell-penetrating Peptides to Study Intracellular Protein-protein Interactions

1Instituto de Neurociencias de Castilla y León (INCYL). Departamento de Bioquímica y Biología Molecular, Universidad de Salamanca, 2Centre for Cancer Research & Cell Biology (CCRCB). School of Medicine, Dentistry and Biomedical Sciences, Queen's University Belfast

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JoVE 56457


 JoVE In-Press

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