The normal adult human body contains on the or-der of a trillion (1012) lymphocytes.… Together, thethymus and marrow produce approximately 109mature lymphocytes each day, which are thenreleased into the ...
MoreThe normal adult human body contains on the or-der of a trillion (1012) lymphocytes.… Together, thethymus and marrow produce approximately 109mature lymphocytes each day, which are thenreleased into the circulation. Tristram G. Parslow(pp40-41)Lymphocytes are the cells that carry out antigen-specific immune responses. The 2 main types are the T lymphocyte and the B lymphocyte, also called the T cell and the B cell. A hyphen does not appear in these terms, unless they are used adjectivally.Historically, the letters T and B reflected the anatomic sites of maturation of the 2 groups of cells, the thymus and the bursa of Fabricius, respectively. ...
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