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　　總??(zong)的??(de)來??(lai)說??(shuo)??，先??(xian)天??(tian)性?(xing)免??(mian)疫??(yi)的??(de)特?(te)點??(dian)是??(shi)反??(fan)應??(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)??。??　　老?(lao)年??(nian)期?(qi)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)如??(ru)同??(tong)“老??(lao)兵??(bing)”??，經(jīng)??(jing)驗??(yan)豐祝(feng)富??(fu)但??(dan)機??(ji)能??(neng)衰??(shuai)退??(tui)??，需?(xu)針??(zhen)對祝(dui)性??(xing)維??(wei)護??(hu)以??(yi)降??(jiang)低??(di)重??(zhong)癥??(zheng)風?(feng)險??(xian)??。??這??(zhe)一??(yi)時??(shi)期??(qi)的??(de)免??(mian)疫??(yi)特??(te)點??(dian)??，一??(yi)是??(shi)T細??(xi)胞??(bao)功??(gong)能?(neng)退??(tui)化??(hua)??，記?(ji)憶??(yi)T細??(xi)胞??(bao)主??(zhu)導?(dao)??，但??(dan)清??(qing)除??(chu)病??(bing)原??(yuan)體??(ti)能??(neng)力??(li)下??(xia)降??(jiang)；二??(er)是?(shi)抗??(kang)體??(ti)質(zhì)??(zhi)量??(liang)降??(jiang)低??(di)??，疫?(yi)苗??(miao)應??(ying)答?(da)減??(jian)弱??(ruo)??，感??(gan)染??(ran)(如?(ru)肺??(fei)炎??(yan)、帶??(dai)狀??(zhuang)皰??(pao)疹??(zhen))易?(yi)重??(zhong)癥??(zheng)化??(hua)；三?(san)是??(shi)衰??(shuai)老?(lao)相??(xiang)關??(guan)疾??(ji)病??(bing)發(fā)??(fa)病??(bing)風??(feng)險??(xian)上??(shang)升??(sheng)：免??(mian)疫??(yi)監(jiān)??(jian)視??(shi)功??(gong)能??(neng)減??(jian)弱??(ruo)??，無?(wu)法??(fa)及??(ji)時??(shi)清??(qing)除?(chu)突??(tu)變??(bian)細??(xi)胞??(bao)??。WVMJFDZEKIqibao666888　　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)??。??　　lao ?(lao)nian ??(nian)qi ?(qi)mian ??(mian)yi ??(yi)xi ??(xi)tong ??(tong)ru ??(ru)tong ??(tong)“l(fā)ao ??(lao)bing ??(bing)”??，jing ??(jing)yan ??(yan)feng 祝(feng)fu ??(fu)dan ??(dan)ji ??(ji)neng ??(neng)shuai ??(shuai)tui ??(tui)??，xu ?(xu)zhen ??(zhen)dui 祝(dui)xing ??(xing)wei ??(wei)hu ??(hu)yi ??(yi)jiang ??(jiang)di ??(di)zhong ??(zhong)zheng ??(zheng)feng ?(feng)xian ??(xian)??。??zhe ??(zhe)yi ??(yi)shi ??(shi)qi ??(qi)de ??(de)mian ??(mian)yi ??(yi)te ??(te)dian ??(dian)??，yi ??(yi)shi ??(shi)Txi ??(xi)bao ??(bao)gong ??(gong)neng ?(neng)tui ??(tui)hua ??(hua)??，ji ?(ji)yi ??(yi)Txi ??(xi)bao ??(bao)zhu ??(zhu)dao ?(dao)??，dan ??(dan)qing ??(qing)chu ??(chu)bing ??(bing)yuan ??(yuan)ti ??(ti)neng ??(neng)li ??(li)xia ??(xia)jiang ??(jiang)；er ??(er)shi ?(shi)kang ??(kang)ti ??(ti)zhi ??(zhi)liang ??(liang)jiang ??(jiang)di ??(di)??，yi ?(yi)miao ??(miao)ying ??(ying)da ?(da)jian ??(jian)ruo ??(ruo)??，gan ??(gan)ran ??(ran)(ru ?(ru)fei ??(fei)yan ??(yan)、dai ??(dai)zhuang ??(zhuang)pao ??(pao)zhen ??(zhen))yi ?(yi)zhong ??(zhong)zheng ??(zheng)hua ??(hua)；san ?(san)shi ??(shi)shuai ??(shuai)lao ?(lao)xiang ??(xiang)guan ??(guan)ji ??(ji)bing ??(bing)fa ??(fa)bing ??(bing)feng ??(feng)xian ??(xian)shang ??(shang)sheng ??(sheng)：mian ??(mian)yi ??(yi)jian ??(jian)shi ??(shi)gong ??(gong)neng ??(neng)jian ??(jian)ruo ??(ruo)??，wu ?(wu)fa ??(fa)ji ??(ji)shi ??(shi)qing ??(qing)chu ?(chu)tu ??(tu)bian ??(bian)xi ??(xi)bao ??(bao)??。