|Courtesy of R&D Systems
Editor's note: Although individual techniques are associated with specific researchers in this article, it should be noted that these investigators commonly use several different techniques to analyze T lymphocyte populations.
The human body is constantly under siege. It must defend itself from a whole host of bacterial, parasitic, and viral invaders, not to mention rogue cancerous cells. The immune system is the primary line of defense in this game of chess, recognizing and ignoring "self" antigens, while vigorously attacking foreign ones. T lymphocytes, the strategists in this game, both direct the responses of the rest of the immune system and play an active role in it. T cells orchestrate the immune response via the production of cytokines--secreted proteins that instruct...
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