...Immunity Arises B Lymphocytes (B Cells) T...
...(B Cells) T Lymphocytes (T Cells) Antigen...
...Immunity Helper T Lymphocytes CD4 Molecule Cytokines...

...are produced by lymphocytes. A. Nonspecific Defenses...
...encounter macrophages and lymphocytes. Microorganisms, microbial fragments,...
...they inevitably encounter lymphocytes, the key cells...
...line of defense. Lymphocytes generate efficient and...
...as foreign. 1. Lymphocytes provide the specificity...
...main types of lymphocytes: B lymphocytes (B...
...of lymphocytes: B lymphocytes (B cells) and...
...cells) and T lymphocytes (T cells). Both...
...Both types of lymphocytes circulate throughout the...
...lymphatic tissue. Because lymphocytes recognize and respond...
...specific response by lymphocytes is called an...
...interact with specific lymphocytes, inducing immune responses...
...interacts only with lymphocytes bearing receptors specific...
...diverse pool of lymphocytes. This relatively small...
...and differentiation of lymphocytes that occur the...
...self from nonself Lymphocytes, like all blood...
...developing fetus. Early lymphocytes are all alike,...
...continue their maturation. Lymphocytes that migrate from...
...into T cells. Lymphocytes that remain in...
...the most part, lymphocytes bearing receptors specific...
...apoptosis, leaving only lymphocytes that react to...
...has no mature lymphocytes that react against...
...to autoimmune diseases. Lymphocytes do not react...
...B and T lymphocytes exhibit four attributes...
...cell-mediated immunity, T lymphocytes attack viruses and...
...1. Helper T lymphocytes function in both...
...that stimulate other lymphocytes. For example, the...
...Antigen-activated cytotoxic T lymphocytes kill cancer cells...
...donated marrow, containing lymphocytes, may react against...
...diseases had self-reactive lymphocytes that escaped elimination...
...people also have lymphocytes with the capacity...
...to supply functional lymphocytes. Several gene therapy...
...the surfaces of lymphocytes and a network...
...also macrophages, some lymphocytes and some brain...

...provide pathogen-specific recognition. Lymphocytes provide the specificity...
...main types of lymphocytes: B lymphocytes (B...
...of lymphocytes: B lymphocytes (B cells) and...
...cells) and T lymphocytes (T cells). Both...
...Both types of lymphocytes are critical for...
...acquired immune defense. Lymphocytes that originate from...
...into T cells. Lymphocytes that mature in...
...phagocytic cells activate lymphocytes, stimulating an acquired...
...recruit and activate lymphocytes. Macrophages and dendritic...
...are millions of lymphocytes in the body...
...in activating other lymphocytes, while other T...
...B cells. Activated lymphocytes also undergo cell...
...the same microbe. Lymphocytes recognize specific antigens....
...specifically recognized by lymphocytes and elicits a...
...a lymphocyte. Because lymphocytes recognize and respond...
...antigen receptors on lymphocytes. A single B...
...rearranged, some immature lymphocytes produce receptors specific...
...molecules. If self-reactive lymphocytes were not eliminated...
...and tissues. As lymphocytes mature in the...
...tested for self-reactivity. Lymphocytes with receptors specific...
...normally lacks mature lymphocytes that can react...
...Clonal selection amplifies lymphocytes, producing immunological memory....
...a clone of lymphocytes during the first...
...of cytotoxic T lymphocytes, which identify and...
...third population of lymphocytes, the helper T...
...responses. Helper T lymphocytes function in both...
...donated marrow, containing lymphocytes, may react against...
...by any self-reactive lymphocytes that remain functional...
...immunodeficiency (SCID), functional lymphocytes are rare or...
...to supply functional lymphocytes. Several gene therapy...
...products targeted by lymphocytes. In this largely...
...antigens to circulating lymphocytes. Stimuli such as...