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　　T細秘(xi)胞??(bao)的??(de)角??(jiao)色??(se)則??(ze)是??(shi)指??(zhi)揮??(hui)、“殺??(sha)敵??(di)”與??(yu)“維??(wei)穩(wěn)??(wen)”??。??比??(bi)如??(ru)輔??(fu)助??(zhu)T細??(xi)胞??(bao)??，扮??(ban)演??(yan)著??(zhe)“指??(zhi)揮??(hui)官??(guan)”角??(jiao)色??(se)??，通??(tong)過??(guo)釋??(shi)放??(fang)細?(xi)胞??(bao)因??(yin)子??(zi)??，激秘(ji)活??(huo)B細??(xi)胞?(bao)和??(he)其??(qi)他??(ta)免??(mian)疫??(yi)細??(xi)胞??(bao)；細??(xi)胞??(bao)毒??(du)性??(xing)T細?(xi)胞??(bao)??，扮??(ban)演??(yan)著??(zhe)“殺??(sha)手??(shou)”角??(jiao)色??(se)??，直??(zhi)接??(jie)穿??(chuan)透??(tou)感??(gan)染??(ran)細?(xi)胞??(bao)??，注??(zhu)入??(ru)毒??(du)素??(su)將??(jiang)其??(qi)摧?(cui)毀??(hui)；調(diào)??(tiao)節(jié)??(jie)T細??(xi)胞?(bao)??，扮??(ban)演??(yan)著??(zhe)“維??(wei)穩(wěn)??(wen)員??(yuan)”角??(jiao)色??(se)??，防??(fang)止??(zhi)免?(mian)疫??(yi)反??(fan)應(yīng)??(ying)過?(guo)度??(du)??，避??(bi)免??(mian)誤??(wu)傷??(shang)健??(jian)康??(kang)組??(zu)織??(zhi)??。　　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)??。KQWYIWDFHYqibao666888　　Txi 秘(xi)bao ??(bao)de ??(de)jiao ??(jiao)se ??(se)ze ??(ze)shi ??(shi)zhi ??(zhi)hui ??(hui)、“sha ??(sha)di ??(di)”yu ??(yu)“wei ??(wei)wen ??(wen)”??。??bi ??(bi)ru ??(ru)fu ??(fu)zhu ??(zhu)Txi ??(xi)bao ??(bao)??，ban ??(ban)yan ??(yan)zhe ??(zhe)“zhi ??(zhi)hui ??(hui)guan ??(guan)”jiao ??(jiao)se ??(se)??，tong ??(tong)guo ??(guo)shi ??(shi)fang ??(fang)xi ?(xi)bao ??(bao)yin ??(yin)zi ??(zi)??，ji 秘(ji)huo ??(huo)Bxi ??(xi)bao ?(bao)he ??(he)qi ??(qi)ta ??(ta)mian ??(mian)yi ??(yi)xi ??(xi)bao ??(bao)；xi ??(xi)bao ??(bao)du ??(du)xing ??(xing)Txi ?(xi)bao ??(bao)??，ban ??(ban)yan ??(yan)zhe ??(zhe)“sha ??(sha)shou ??(shou)”jiao ??(jiao)se ??(se)??，zhi ??(zhi)jie ??(jie)chuan ??(chuan)tou ??(tou)gan ??(gan)ran ??(ran)xi ?(xi)bao ??(bao)??，zhu ??(zhu)ru ??(ru)du ??(du)su ??(su)jiang ??(jiang)qi ??(qi)cui ?(cui)hui ??(hui)；tiao ??(tiao)jie ??(jie)Txi ??(xi)bao ?(bao)??，ban ??(ban)yan ??(yan)zhe ??(zhe)“wei ??(wei)wen ??(wen)yuan ??(yuan)”jiao ??(jiao)se ??(se)??，fang ??(fang)zhi ??(zhi)mian ?(mian)yi ??(yi)fan ??(fan)ying ??(ying)guo ?(guo)du ??(du)??，bi ??(bi)mian ??(mian)wu ??(wu)shang ??(shang)jian ??(jian)kang ??(kang)zu ??(zu)zhi ??(zhi)???！　ing ??(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)??。