扶着岳从后面挺进

　　總??(zong)的??(de)來??(lai)說??(shuo)??，先?(xian)天??(tian)性??(xing)免??(mian)疫??(yi)的??(de)特??(te)點(diǎn)??(dian)是??(shi)反??(fan)應(yīng)??(ying)快??(kuai)、無??(wu)差??(cha)別??(bie)攻??(gong)擊??(ji)??，但??(dan)缺??(que)乏??(fa)“記??(ji)憶?(yi)功??(gong)能??(neng)”??，無??(wu)法??(fa)針??(zhen)對??(dui)特??(te)定??(ding)敵??(di)人??(ren)提??(ti)升??(sheng)戰(zhàn)??(zhan)斗??(dou)力??(li)??。??　　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(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??(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??(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)??。RJRALTLYVKqibao666888　　zong ??(zong)de ??(de)lai ??(lai)shuo ??(shuo)??，xian ?(xian)tian ??(tian)xing ??(xing)mian ??(mian)yi ??(yi)de ??(de)te ??(te)dian ??(dian)shi ??(shi)fan ??(fan)ying ??(ying)kuai ??(kuai)、wu ??(wu)cha ??(cha)bie ??(bie)gong ??(gong)ji ??(ji)??，dan ??(dan)que ??(que)fa ??(fa)“ji ??(ji)yi ?(yi)gong ??(gong)neng ??(neng)”??，wu ??(wu)fa ??(fa)zhen ??(zhen)dui ??(dui)te ??(te)ding ??(ding)di ??(di)ren ??(ren)ti ??(ti)sheng ??(sheng)zhan ??(zhan)dou ??(dou)li ??(li)??。??　　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)??。