Human Lymphocytes
Human Lymphocytes - Related Videos
08:39
Human T Lymphocyte Isolation, Culture and Analysis of Migration In Vitro
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Cited by 27 •
2010
T lymphocyte migration occurs during homing to lymphoid organs, exit from the vasculature, and entering into peripheral tissues. Here, we describe a protocol that can be used to analyze T lymphocyte migration in vitro.
08:09
Efficient Isolation Protocol for B and T Lymphocytes from Human Palatine Tonsils
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Cited by 11 •
2015
Palatine tonsils are a rich source of B and T lymphocytes. Here we provide an easy, efficient and rapid protocol to isolate B and T lymphocytes from human palatine tonsils. The method described has been specifically adapted for studies of the viral etiology of tonsil inflammation known as tonsillitis.
04:50
Delivering Effector T Lymphocytes into Mice Carrying Human Brain Tumors
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2025
This video demonstrates a stereotaxic injection technique for administering human effector T lymphocytes into a murine model carrying a human brain tumor. Upon positioning a tumor-bearing anesthetized mouse on a stereotactic frame and creating a burr hole at the injection location on the skull, effector T lymphocytes are injected at the tumor site.
09:00
Analysis of Lymphocyte Extravasation Using an In Vitro Model of the Human Blood-brain Barrier
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Cited by 6 •
2017
Here, we describe a human blood-brain barrier model enabling to investigate lymphocyte transmigration into the central nervous system in vitro.
10:31
Lymphocyte Isolation from Human Skin for Phenotypic Analysis and Ex Vivo Cell Culture
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Cited by 16 •
2016
We describe a protocol to efficiently isolate skin resident T cells from human skin biopsies. This protocol yields sufficient numbers of viable human skin resident lymphocytes for flow cytometric analysis and ex vivo culture.
FAQs
B cells respond to antigen recognition by differentiating into plasma cells, which produce antibodies. T cells instead use antigen receptors to coordinate immune activity or destroy infected cells. This division allows lymphocytes to address infection through distinct outcomes: antibody production, regulation of other immune cells, or direct removal of infected targets.
Natural killer cells can trigger apoptosis, a form of programmed cell death, in stressed or abnormal targets without prior antigen sensitization. This distinguishes their response from antigen-specific lymphocyte activity described for B and T cells. Their behavior is therefore relevant when studying rapid immune defense against abnormal or infected cells.
Activation, proliferation, cytokine release, and memory formation provide complementary views of lymphocyte behavior. Activation indicates that cells have responded, proliferation shows expansion of the responding population, cytokine release reflects immune signaling, and memory formation addresses longer-term protection. Examining these processes together helps connect cellular responses with immune regulation and protection.
A comparison can focus on antigen dependence, cellular function, and response persistence. B and T cells use antigen-directed mechanisms and can contribute to memory, whereas natural killer cells can act against stressed or abnormal targets without prior sensitization. Measuring activation, cytokine release, proliferation, and memory helps distinguish these response patterns in infection research.
Lymphocyte analysis can show whether an immune response includes activation, expansion, cytokine release, and memory formation. These measurements help researchers investigate how vaccination may support protection over time, rather than assessing only an immediate cellular response. Memory formation is especially relevant for understanding the persistence of vaccine-associated immune defense.
Researchers analyze lymphocyte behavior to investigate immune deficiencies, autoimmune disease, cancer responses, and emerging pathogens. The same measurements, including activation, proliferation, cytokine release, and memory formation, can reveal how immune regulation changes across conditions. This makes lymphocyte studies useful for connecting cellular mechanisms with differences in protection or disease-related immune activity.