Zvirwere zvekuzvidzivirira mumuviri zvinokonzerwa nekushaya simba kwemuviri. Pano, immune system inokundikana kusiyanisa zvakanaka pakati pekuzvida uye kusazvida, uye inorwisa chikamu chemuviri. Pasi pemamiriro ezvinhu akajairwa, akawanda maT cell nemapiritsi anopindirana ne "self" peptides. Rimwe remabasa emasero akasarudzika (anowanikwa mu thymus uye bone marrow) ndeyekupa ma lymphocyte madiki ane ma antigen anogadzirwa mumuviri wese uye kubvisa iwo maseru anoziva ma antigen, achidzivirira autoimmunity. Mubvunzo: Chii chinorwisa immune system?
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