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　　【健??(jian)·生??(sheng)活??(huo)】　　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??(yi)系??(xi)統(tǒng)??(tong)逐??(zhu)漸??(jian)成??(cheng)熟??(shu)??，適??(shi)應??(ying)性??(xing)免??(mian)疫?(yi)(T細??(xi)胞??(bao)、B細??(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??(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??(yan)不??(bu)足??(zu)”而??(er)反??(fan)應??(ying)過??(guo)度??(du)??，如??(ru)對??(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??(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)??。QFFEMWKMZYqibao666888　　【jian ??(jian)·sheng ??(sheng)huo ??(huo)】　　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)??。