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　　嬰??(ying)幼??(you)兒??(er)期??(qi)(0～3歲??(sui))??，新??(xin)生??(sheng)兒??(er)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)像?(xiang)一??(yi)支??(zhi)未??(wei)經(jīng)??(jing)實??(shi)戰(zhàn)??(zhan)的??(de)“新??(xin)兵??(bing)部??(bu)隊??(dui)”??，先??(xian)天??(tian)性??(xing)免?(mian)疫??(yi)(如??(ru)中??(zhong)性??(xing)粒?(li)細(xì)??(xi)胞??(bao)、巨??(ju)噬??(shi)細(xì)??(xi)胞??(bao))活??(huo)性??(xing)高??(gao)??，但??(dan)皮??(pi)膚??(fu)、黏?(nian)膜??(mo)屏??(ping)障??(zhang)薄??(bo)弱??(ruo)??，易??(yi)受??(shou)病??(bing)毒??(du)(如??(ru)呼??(hu)吸??(xi)道??(dao)合??(he)胞?(bao)病??(bing)毒??(du)、輪??(lun)狀??(zhuang)病??(bing)毒??(du))侵?(qin)襲??(xi)??。??此??(ci)時??(shi)主??(zhu)要??(yao)依??(yi)賴??(lai)母??(mu)體??(ti)通??(tong)過?(guo)胎??(tai)盤??(pan)和??(he)母??(mu)乳??(ru)傳??(chuan)遞??(di)的??(de)抗??(kang)體??(ti)(如??(ru)IgG、IgA)提??(ti)供??(gong)保??(bao)護??(hu)???！　〉??(di)三??(san)道??(dao)防??(fang)御?(yu)是??(shi)“生??(sheng)化??(hua)武??(wu)器?(qi)庫??(ku)”??，負(fù)??(fu)責(zé)??(ze)標(biāo)??(biao)記??(ji)與??(yu)“圍??(wei)剿??(jiao)”??。??如??(ru)補??(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??(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??(hao)??，也??(ye)能??(neng)抑??(yi)制??(zhi)病??(bing)原??(yuan)體??(ti)繁??(fan)殖??(zhi)??。TTYQWUAPTOqibao666888　　ying ??(ying)you ??(you)er ??(er)qi ??(qi)(0～3sui ??(sui))??，xin ??(xin)sheng ??(sheng)er ??(er)mian ??(mian)yi ??(yi)xi ??(xi)tong ??(tong)xiang ?(xiang)yi ??(yi)zhi ??(zhi)wei ??(wei)jing ??(jing)shi ??(shi)zhan ??(zhan)de ??(de)“xin ??(xin)bing ??(bing)bu ??(bu)dui ??(dui)”??，xian ??(xian)tian ??(tian)xing ??(xing)mian ?(mian)yi ??(yi)(ru ??(ru)zhong ??(zhong)xing ??(xing)li ?(li)xi ??(xi)bao ??(bao)、ju ??(ju)shi ??(shi)xi ??(xi)bao ??(bao))huo ??(huo)xing ??(xing)gao ??(gao)??，dan ??(dan)pi ??(pi)fu ??(fu)、nian ?(nian)mo ??(mo)ping ??(ping)zhang ??(zhang)bo ??(bo)ruo ??(ruo)??，yi ??(yi)shou ??(shou)bing ??(bing)du ??(du)(ru ??(ru)hu ??(hu)xi ??(xi)dao ??(dao)he ??(he)bao ?(bao)bing ??(bing)du ??(du)、lun ??(lun)zhuang ??(zhuang)bing ??(bing)du ??(du))qin ?(qin)xi ??(xi)??。??ci ??(ci)shi ??(shi)zhu ??(zhu)yao ??(yao)yi ??(yi)lai ??(lai)mu ??(mu)ti ??(ti)tong ??(tong)guo ?(guo)tai ??(tai)pan ??(pan)he ??(he)mu ??(mu)ru ??(ru)chuan ??(chuan)di ??(di)de ??(de)kang ??(kang)ti ??(ti)(ru ??(ru)IgG、IgA)ti ??(ti)gong ??(gong)bao ??(bao)hu ??(hu)???！　i ??(di)san ??(san)dao ??(dao)fang ??(fang)yu ?(yu)shi ??(shi)“sheng ??(sheng)hua ??(hua)wu ??(wu)qi ?(qi)ku ??(ku)”??，fu ??(fu)ze ??(ze)biao ??(biao)ji ??(ji)yu ??(yu)“wei ??(wei)jiao ??(jiao)”??。??ru ??(ru)bu ??(bu)ti ??(ti)dan ??(dan)bai ??(bai)??，jiu ?(jiu)xiang ?(xiang)“ying ??(ying)guang ??(guang)tu ??(tu)liao ??(liao)”yi ??(yi)yang ??(yang)biao ??(biao)ji ??(ji)bing ??(bing)yuan ??(yuan)ti ??(ti)??，bang ??(bang)zhu ?(zhu)mian ??(mian)yi ??(yi)xi ??(xi)bao ??(bao)jing ??(jing)zhun ??(zhun)shi ??(shi)bie ??(bie)mu ?(mu)biao ??(biao)；ru ??(ru)yan ??(yan)zheng ??(zheng)fan ??(fan)ying ??(ying)??，ju ??(ju)bu ??(bu)hong ??(hong)zhong ??(zhong)、fa ??(fa)re ??(re)??，ji ??(ji)shi ??(shi)zhan ??(zhan)dou ??(dou)xin ??(xin)hao ??(hao)??，ye ??(ye)neng ??(neng)yi ??(yi)zhi ??(zhi)bing ??(bing)yuan ??(yuan)ti ??(ti)fan ??(fan)zhi ??(zhi)??。