日韩欧美在线观看一区二区视频

　　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)???！　∈??(shou)先??(xian)要??(yao)識??(shi)別??(bie)“自??(zi)我??(wo)”與??(yu)“非??(fei)我??(wo)”??。??通??(tong)過??(guo)細??(xi)胞??(bao)表??(biao)面??(mian)的??(de)特??(te)殊??(shu)蛋??(dan)白??(bai)(如??(ru)MHC分?(fen)子??(zi))區(qū)??(qu)分??(fen)自??(zi)身??(shen)細??(xi)胞??(bao)和??(he)外??(wai)來??(lai)病??(bing)原??(yuan)體??(ti)??。一??(yi)旦??(dan)誤?(wu)判??(pan)??，可??(ke)能??(neng)攻??(gong)擊??(ji)自??(zi)身??(shen)組?(zu)織??(zhi)??，導??(dao)致??(zhi)類??(lei)風?(feng)濕??(shi)關??(guan)節(jié)??(jie)炎??(yan)、1型??(xing)糖??(tang)尿??(niao)病?(bing)等??(deng)疾??(ji)病??(bing)??。NCSTFCBGLQqibao666888　　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)???！　hou ??(shou)xian ??(xian)yao ??(yao)shi ??(shi)bie ??(bie)“zi ??(zi)wo ??(wo)”yu ??(yu)“fei ??(fei)wo ??(wo)”??。??tong ??(tong)guo ??(guo)xi ??(xi)bao ??(bao)biao ??(biao)mian ??(mian)de ??(de)te ??(te)shu ??(shu)dan ??(dan)bai ??(bai)(ru ??(ru)MHCfen ?(fen)zi ??(zi))qu ??(qu)fen ??(fen)zi ??(zi)shen ??(shen)xi ??(xi)bao ??(bao)he ??(he)wai ??(wai)lai ??(lai)bing ??(bing)yuan ??(yuan)ti ??(ti)??。yi ??(yi)dan ??(dan)wu ?(wu)pan ??(pan)??，ke ??(ke)neng ??(neng)gong ??(gong)ji ??(ji)zi ??(zi)shen ??(shen)zu ?(zu)zhi ??(zhi)??，dao ??(dao)zhi ??(zhi)lei ??(lei)feng ?(feng)shi ??(shi)guan ??(guan)jie ??(jie)yan ??(yan)、1xing ??(xing)tang ??(tang)niao ??(niao)bing ?(bing)deng ??(deng)ji ??(ji)bing ??(bing)??。