Kalli nassin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar nassin: Passage: Microorganisms ko toxins waɗanda suka shiga cikin kwayar halitta cikin nasara sun haɗu da ƙwayoyin cuta da kuma tsarin tsarin rigakafi na asali. Ana haifar da amsar ta asali ne lokacin da aka gano ƙwayoyin cuta ta hanyar masu karɓar ƙira, waɗanda ke gane abubuwan da aka adana a tsakanin manyan ƙungiyoyin ƙananan ƙwayoyin cuta, ko lokacin da aka lalata, raunuka ko ƙwayoyin cuta suna aika sakonnin ƙararrawa, da yawa daga cikinsu (amma ba duka ba) waɗanda masu karɓa suka gane su kamar waɗanda ke gane ƙwayoyin cuta.
tsarin garkuwar jiki