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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??(xi)胞??(bao)、巨??(ju)噬??(shi)細??(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)??。　　人??(ren)體??(ti)由??(you)兩?(liang)支??(zhi)精??(jing)銳??(rui)部?(bu)隊??(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)??。VFGTDCFXOZqibao666888　　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)???！　en ??(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)??。