Pbmc Pellet Preparation
Pbmc Pellet Preparation - Related Videos
02:26
A Technique to Generate a Human PBMC-Engrafted Humanized Xenograft Mouse Model
0 Views •
2025
This video demonstrates an assay to generate a humanized xenograft mouse model. An immunocompromised mouse is injected with cyclophosphamide to cause immune cell depletion. Patient-derived tumor cells mixed with human peripheral blood mononuclear cells (PBMCs) in a hydrogel are subcutaneously injected into the mouse, forming a tumor with infiltrating T cells.
11:25
Preparation of a Blood Culture Pellet for Rapid Bacterial Identification and Antibiotic Susceptibility Testing
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Cited by 27 •
2014
A rapid bacterial pellet preparation from a positive blood culture can be used as a sample for applications such as identification by MALDI-TOF, Gram staining, antibiotic susceptibility testing and PCR-based test. The results can be rapidly communicated to clinicians to improve the outcome of patients suffering from bloodstream infections.
08:52
Method to Produce Durable Pellets at Lower Energy Consumption Using High Moisture Corn Stover and a Corn Starch Binder in a Flat Die Pellet Mill
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Cited by 50 •
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In this study, a protocol was developed to produce good quality pellets using a flat die pellet mill at reduced specific energy consumption testing high-moisture corn stover and a starch based binder. The results indicated that adding a corn starch binder improved the pellet durability, reduced percent fines and decreased specific energy consumption.
12:10
Chondrogenic Pellet Formation from Cord Blood-derived Induced Pluripotent Stem Cells
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Cited by 17 •
2017
Here, we propose a protocol for chondrogenic differentiation from cord blood mononuclear cell-derived human induced pluripotent stem cells.
10:12
Extraction of Organochlorine Pesticides from Plastic Pellets and Plastic Type Analysis
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Cited by 10 •
2017
Microplastics act as vector of potentially toxic organic contaminants with unpredictable effects. This protocol describes an alternative methodology for assessing the levels of organochlorine pesticides adsorbed on plastic pellets and identifying the polymer chemical structure. The focus is on pressurized fluid extraction and attenuated total reflectance Fourier transform infrared spectroscopy.
FAQs
Density-based separation creates the initial distinction between the desired mononuclear-cell fraction and other blood components. After that separation, removing the supernatant and applying controlled centrifugation concentrates the cells without relying on the liquid phase. This sequence matters because a consistent pellet provides a defined starting material for counting, viability assessment, immunophenotyping, and downstream molecular or culture studies.
Washing reduces residual plasma and reagents that could remain around the cells after separation. Controlled centrifugation then gathers the washed fraction into a compact pellet, while careful handling helps preserve cellular integrity. These steps are important for reproducibility because carryover or inconsistent processing can affect the quality of material used for later cell counting, viability assessment, and analytical assays.
An appropriate resuspension medium converts the compact pellet into a usable cell preparation for subsequent work. The medium is selected within the validated workflow so cells can be handled for counting, viability assessment, immunophenotyping, molecular assays, or culture. Resuspension also makes the concentrated fraction accessible for consistent sampling rather than leaving it confined to the centrifuge tube.
After the PBMC fraction has been isolated, the workflow removes the supernatant, washes the cells, and uses controlled centrifugation to form the pellet. The pellet is then resuspended in an appropriate medium. Keeping these stages in a consistent order supports reproducible preparation and creates material suitable for the planned downstream analysis.
Prepared material can support cell counting and viability assessment before more specialized work. It can then be used for immunophenotyping, molecular assays, or cell culture, depending on the study design. These readouts allow investigators to evaluate the recovered cell population and its condition, while standardized handling improves comparability across medical and biomedical samples.
In medical research, consistent PBMC pellet preparation supports studies of immunity, infection, and inflammation, as well as analyses of patient-derived biomarkers. Its value is not limited to one assay: the same prepared cell fraction can provide input for cellular, phenotypic, molecular, or culture-based investigations when the workflow preserves integrity and reproducibility.