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　　兒??(er)童??(tong)至?(zhi)青??(qing)少??(shao)年?(nian)期?(qi)(4～18歲??(sui))??，隨??(sui)著??(zhe)免??(mian)疫祝(yi)系?(xi)統(tǒng)??(tong)逐??(zhu)漸??(jian)成??(cheng)熟??(shu)??，適??(shi)應(yīng)??(ying)性??(xing)免??(mian)疫??(yi)(T細(xì)??(xi)胞??(bao)、B細(xì)??(xi)胞?(bao))開??(kai)始??(shi)發(fā)??(fa)揮??(hui)主??(zhu)力??(li)作??(zuo)用??(yong)??，能??(neng)針??(zhen)對(duì)??(dui)病??(bing)原??(yuan)體??(ti)產(chǎn)??(chan)生??(sheng)特??(te)異??(yi)性??(xing)抗??(kang)體??(ti)??。??但??(dan)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)也??(ye)可??(ke)能??(neng)因??(yin)“經(jīng)??(jing)驗(yàn)?(yan)不?(bu)足?(zu)”而??(er)反??(fan)應(yīng)??(ying)過??(guo)度??(du)??，如??(ru)對(duì)??(dui)花??(hua)粉??(fen)、食??(shi)物??(wu)等?(deng)無??(wu)害??(hai)物??(wu)質(zhì)??(zhi)過??(guo)度??(du)反??(fan)應(yīng)??(ying)??，引??(yin)發(fā)??(fa)哮??(xiao)喘?(chuan)、濕??(shi)疹??(zhen)；如??(ru)接??(jie)觸??(chu)外??(wai)界??(jie)增??(zeng)多??(duo)??，易?(yi)感?(gan)染?(ran)手??(shou)足??(zu)口?(kou)病??(bing)、水??(shui)痘??(dou)等?(deng)傳??(chuan)染??(ran)病??(bing)???！　?(er)童??(tong)至??(zhi)青??(qing)少?(shao)年??(nian)期??(qi)(4～18歲?(sui))??，隨?(sui)著??(zhe)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)逐?(zhu)漸??(jian)成??(cheng)熟??(shu)??，適??(shi)應(yīng)??(ying)性??(xing)免??(mian)疫??(yi)(T細(xì)??(xi)胞?(bao)、B細(xì)??(xi)胞??(bao))開?(kai)始??(shi)發(fā)??(fa)揮??(hui)主??(zhu)力??(li)作??(zuo)用??(yong)??，能??(neng)針??(zhen)對(duì)??(dui)病??(bing)原??(yuan)體??(ti)產(chǎn)??(chan)生??(sheng)特??(te)異?(yi)性??(xing)抗?(kang)體??(ti)??。?但??(dan)免??(mian)疫?(yi)系??(xi)統(tǒng)??(tong)也??(ye)可??(ke)能??(neng)因??(yin)“經(jīng)??(jing)驗(yàn)??(yan)不??(bu)足??(zu)”而??(er)反??(fan)應(yīng)??(ying)過??(guo)度?(du)??，如??(ru)對(duì)??(dui)花??(hua)粉??(fen)、食??(shi)物??(wu)等??(deng)無??(wu)害??(hai)物??(wu)質(zhì)??(zhi)過??(guo)度??(du)反??(fan)應(yīng)??(ying)??，引??(yin)發(fā)??(fa)哮??(xiao)喘??(chuan)、濕??(shi)疹??(zhen)；如??(ru)接??(jie)觸??(chu)外??(wai)界??(jie)增?(zeng)多??(duo)??，易?(yi)感??(gan)染??(ran)手?(shou)足?(zu)口??(kou)病??(bing)、水?(shui)痘??(dou)等?(deng)傳??(chuan)染??(ran)病??(bing)??。MKPLCNFCDMqibao666888　　er ??(er)tong ??(tong)zhi ?(zhi)qing ??(qing)shao ??(shao)nian ?(nian)qi ?(qi)(4～18sui ??(sui))??，sui ??(sui)zhe ??(zhe)mian ??(mian)yi 祝(yi)xi ?(xi)tong ??(tong)zhu ??(zhu)jian ??(jian)cheng ??(cheng)shu ??(shu)??，shi ??(shi)ying ??(ying)xing ??(xing)mian ??(mian)yi ??(yi)(Txi ??(xi)bao ??(bao)、Bxi ??(xi)bao ?(bao))kai ??(kai)shi ??(shi)fa ??(fa)hui ??(hui)zhu ??(zhu)li ??(li)zuo ??(zuo)yong ??(yong)??，neng ??(neng)zhen ??(zhen)dui ??(dui)bing ??(bing)yuan ??(yuan)ti ??(ti)chan ??(chan)sheng ??(sheng)te ??(te)yi ??(yi)xing ??(xing)kang ??(kang)ti ??(ti)??。??dan ??(dan)mian ??(mian)yi ??(yi)xi ??(xi)tong ??(tong)ye ??(ye)ke ??(ke)neng ??(neng)yin ??(yin)“jing ??(jing)yan ?(yan)bu ?(bu)zu ?(zu)”er ??(er)fan ??(fan)ying ??(ying)guo ??(guo)du ??(du)??，ru ??(ru)dui ??(dui)hua ??(hua)fen ??(fen)、shi ??(shi)wu ??(wu)deng ?(deng)wu ??(wu)hai ??(hai)wu ??(wu)zhi ??(zhi)guo ??(guo)du ??(du)fan ??(fan)ying ??(ying)??，yin ??(yin)fa ??(fa)xiao ??(xiao)chuan ?(chuan)、shi ??(shi)zhen ??(zhen)；ru ??(ru)jie ??(jie)chu ??(chu)wai ??(wai)jie ??(jie)zeng ??(zeng)duo ??(duo)??，yi ?(yi)gan ?(gan)ran ?(ran)shou ??(shou)zu ??(zu)kou ?(kou)bing ??(bing)、shui ??(shui)dou ??(dou)deng ?(deng)chuan ??(chuan)ran ??(ran)bing ??(bing)??。　　er ?(er)tong ??(tong)zhi ??(zhi)qing ??(qing)shao ?(shao)nian ??(nian)qi ??(qi)(4～18sui ?(sui))??，sui ?(sui)zhe ??(zhe)mian ??(mian)yi ??(yi)xi ??(xi)tong ??(tong)zhu ?(zhu)jian ??(jian)cheng ??(cheng)shu ??(shu)??，shi ??(shi)ying ??(ying)xing ??(xing)mian ??(mian)yi ??(yi)(Txi ??(xi)bao ?(bao)、Bxi ??(xi)bao ??(bao))kai ?(kai)shi ??(shi)fa ??(fa)hui ??(hui)zhu ??(zhu)li ??(li)zuo ??(zuo)yong ??(yong)??，neng ??(neng)zhen ??(zhen)dui ??(dui)bing ??(bing)yuan ??(yuan)ti ??(ti)chan ??(chan)sheng ??(sheng)te ??(te)yi ?(yi)xing ??(xing)kang ?(kang)ti ??(ti)??。?dan ??(dan)mian ??(mian)yi ?(yi)xi ??(xi)tong ??(tong)ye ??(ye)ke ??(ke)neng ??(neng)yin ??(yin)“jing ??(jing)yan ??(yan)bu ??(bu)zu ??(zu)”er ??(er)fan ??(fan)ying ??(ying)guo ??(guo)du ?(du)??，ru ??(ru)dui ??(dui)hua ??(hua)fen ??(fen)、shi ??(shi)wu ??(wu)deng ??(deng)wu ??(wu)hai ??(hai)wu ??(wu)zhi ??(zhi)guo ??(guo)du ??(du)fan ??(fan)ying ??(ying)??，yin ??(yin)fa ??(fa)xiao ??(xiao)chuan ??(chuan)、shi ??(shi)zhen ??(zhen)；ru ??(ru)jie ??(jie)chu ??(chu)wai ??(wai)jie ??(jie)zeng ?(zeng)duo ??(duo)??，yi ?(yi)gan ??(gan)ran ??(ran)shou ?(shou)zu ?(zu)kou ??(kou)bing ??(bing)、shui ?(shui)dou ??(dou)deng ?(deng)chuan ??(chuan)ran ??(ran)bing ??(bing)??。