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　　其??(qi)次??(ci)是??(shi)清??(qing)除??(chu)威??(wei)脅??(xie)?，包??(bao)括??(kuo)消??(xiao)滅??(mie)細(xì)??(xi)菌??(jun)、病??(bing)毒??(du)等??(deng)外??(wai)來??(lai)入??(ru)侵??(qin)者??(zhe)?，及??(ji)時(shí)??(shi)發(fā)?(fa)現(xiàn)??(xian)并??(bing)清??(qing)除??(chu)異??(yi)常??(chang)細(xì)??(xi)胞??(bao)?，防??(fang)止??(zhi)腫??(zhong)瘤??(liu)形??(xing)成??(cheng)??。??　　人??(ren)體??(ti)由??(you)兩??(liang)支??(zhi)精??(jing)銳?(rui)部??(bu)隊(duì)??(dui)——先??(xian)天??(tian)性??(xing)免??(mian)疫??(yi)和??(he)適?(shi)應(yīng)??(ying)性??(xing)免??(mian)疫??(yi)組??(zu)成??(cheng)??。??它??(ta)們??(men)分?(fen)工??(gong)明??(ming)確??(que)、協(xié)??(xie)同??(tong)作??(zuo)戰(zhàn)??(zhan)??，既??(ji)能??(neng)抵??(di)御??(yu)外??(wai)敵??(di)入??(ru)侵??(qin)??，又??(you)能??(neng)清??(qing)理??(li)內(nèi)??(nei)部??(bu)隱?(yin)患?(huan)??。HFOPBSYHILqibao666888　　qi ??(qi)ci ??(ci)shi ??(shi)qing ??(qing)chu ??(chu)wei ??(wei)xie ??(xie)?，bao ??(bao)kuo ??(kuo)xiao ??(xiao)mie ??(mie)xi ??(xi)jun ??(jun)、bing ??(bing)du ??(du)deng ??(deng)wai ??(wai)lai ??(lai)ru ??(ru)qin ??(qin)zhe ??(zhe)?，ji ??(ji)shi ??(shi)fa ?(fa)xian ??(xian)bing ??(bing)qing ??(qing)chu ??(chu)yi ??(yi)chang ??(chang)xi ??(xi)bao ??(bao)?，fang ??(fang)zhi ??(zhi)zhong ??(zhong)liu ??(liu)xing ??(xing)cheng ??(cheng)??。??　　ren ??(ren)ti ??(ti)you ??(you)liang ??(liang)zhi ??(zhi)jing ??(jing)rui ?(rui)bu ??(bu)dui ??(dui)——xian ??(xian)tian ??(tian)xing ??(xing)mian ??(mian)yi ??(yi)he ??(he)shi ?(shi)ying ??(ying)xing ??(xing)mian ??(mian)yi ??(yi)zu ??(zu)cheng ??(cheng)??。??ta ??(ta)men ??(men)fen ?(fen)gong ??(gong)ming ??(ming)que ??(que)、xie ??(xie)tong ??(tong)zuo ??(zuo)zhan ??(zhan)??，ji ??(ji)neng ??(neng)di ??(di)yu ??(yu)wai ??(wai)di ??(di)ru ??(ru)qin ??(qin)??，you ??(you)neng ??(neng)qing ??(qing)li ??(li)nei ??(nei)bu ??(bu)yin ?(yin)huan ?(huan)??。