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　　第??(di)三??(san)道??(dao)防??(fang)御??(yu)是?(shi)“生??(sheng)化??(hua)武?(wu)器??(qi)庫(kù)??(ku)”??，負(fù)??(fu)責(zé)??(ze)標(biāo)??(biao)記??(ji)與??(yu)“圍??(wei)剿??(jiao)”?。??如??(ru)補(bǔ)??(bu)體??(ti)蛋??(dan)白??(bai)??，就??(jiu)像??(xiang)“熒??(ying)光??(guang)涂??(tu)料??(liao)”一??(yi)樣??(yang)標(biāo)?(biao)記??(ji)病??(bing)原??(yuan)體?(ti)??，幫??(bang)助??(zhu)免??(mian)疫??(yi)細(xì)??(xi)胞??(bao)精??(jing)準(zhǔn)??(zhun)識(shí)??(shi)別??(bie)目??(mu)標(biāo)??(biao)；如??(ru)炎??(yan)癥??(zheng)反??(fan)應(yīng)??(ying)??，局??(ju)部??(bu)紅??(hong)腫??(zhong)、發(fā)??(fa)熱??(re)??，既??(ji)是??(shi)戰(zhàn)?(zhan)斗?(dou)信??(xin)號(hào)??(hao)??，也??(ye)能??(neng)抑??(yi)制??(zhi)病??(bing)原??(yuan)體??(ti)繁??(fan)殖?(zhi)??！　∪??(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)??。。