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學習快評丨qibao666888　　動??(dong)態(tài)??(tai)平??(ping)衡??(heng)??，免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)“終??(zhong)生??(sheng)任??(ren)務(wù)??(wu)”　　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(yīng)??(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(yīng)??(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(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)??。。