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　　在??(zai)人??(ren)類??(lei)演??(yan)化??(hua)的??(de)長?(chang)河??(he)中??(zhong)??，人??(ren)體??(ti)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)猶??(you)如??(ru)一??(yi)座??(zuo)精??(jing)密??(mi)設(shè)??(she)計(jì)??(ji)的??(de)防??(fang)御??(yu)工??(gong)事??(shi)??，其??(qi)運(yùn)??(yun)作??(zuo)機(jī)??(ji)制??(zhi)既??(ji)展??(zhan)現(xiàn)??(xian)著??(zhe)生?(sheng)命??(ming)演??(yan)化??(hua)的??(de)智??(zhi)慧??(hui)??，也??(ye)蘊(yùn)??(yun)含??(han)著??(zhe)醫(yī)??(yi)學(xué)??(xue)干??(gan)預(yù)??(yu)的??(de)啟??(qi)示??(shi)??。??猶?(you)如??(ru)一??(yi)個??(ge)“隱祝(yin)形??(xing)盾??(dun)牌??(pai)”??，免??(mian)疫??(yi)防??(fang)御??(yu)遵?(zun)從??(cong)怎??(zen)樣??(yang)的??(de)層??(ceng)次??(ci)？??不??(bu)同??(tong)年??(nian)齡??(ling)的??(de)免??(mian)疫??(yi)特??(te)點(diǎn)??(dian)有??(you)哪??(na)些?(xie)？人??(ren)體??(ti)免??(mian)疫??(yi)平??(ping)衡??(heng)的??(de)本??(ben)質(zhì)??(zhi)又??(you)是??(shi)什??(shen)么??(me)？來??(lai)看??(kan)看??(kan)它??(ta)的??(de)運(yùn)??(yun)作??(zuo)奧??(ao)秘??(mi)???！　細(xì)??(xi)胞??(bao)作??(zuo)為??(wei)“抗??(kang)體??(ti)工??(gong)廠??(chang)”??，能??(neng)針??(zhen)對??(dui)不??(bu)同??(tong)病??(bing)原??(yuan)體??(ti)定?(ding)制??(zhi)特??(te)異??(yi)性??(xing)抗??(kang)體??(ti)??，通??(tong)過??(guo)中??(zhong)和??(he)病?(bing)毒??(du)或??(huo)標(biāo)??(biao)記??(ji)病??(bing)原?(yuan)體??(ti)協(xié)??(xie)助??(zhu)清??(qing)除??(chu)機(jī)??(ji)制??(zhi)；同??(tong)時??(shi)分??(fen)化??(hua)出??(chu)的?(de)記??(ji)憶??(yi)B細(xì)??(xi)胞??(bao)可??(ke)在??(zai)免??(mian)疫??(yi)結(jié)??(jie)束??(shu)后??(hou)保??(bao)留??(liu)抗??(kang)體??(ti)“圖??(tu)譜??(pu)”??，實(shí)??(shi)現(xiàn)??(xian)快??(kuai)速??(su)二??(er)次??(ci)應(yīng)??(ying)答?(da)??。??。