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學習快評丨qibao666888　　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??(feng)富??(fu)但??(dan)機?(ji)能??(neng)衰??(shuai)退??(tui)??，需??(xu)針??(zhen)對??(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)??。　　首祝(shou)先??(xian)要??(yao)識??(shi)別??(bie)“自??(zi)我??(wo)”與??(yu)“非??(fei)我??(wo)”?。??通??(tong)過??(guo)細??(xi)胞??(bao)表??(biao)面??(mian)的??(de)特??(te)殊??(shu)蛋??(dan)白??(bai)(如??(ru)MHC分??(fen)子??(zi))區(qū)??(qu)分?(fen)自??(zi)身?(shen)細??(xi)胞??(bao)和??(he)外??(wai)來??(lai)病??(bing)原??(yuan)體??(ti)?。一??(yi)旦??(dan)誤??(wu)判??(pan)??，可??(ke)能??(neng)攻??(gong)擊??(ji)自??(zi)身??(shen)組??(zu)織??(zhi)??，導??(dao)致??(zhi)類??(lei)風??(feng)濕??(shi)關??(guan)節(jié)??(jie)炎??(yan)、1型??(xing)糖??(tang)尿??(niao)病??(bing)等?(deng)疾??(ji)病??(bing)?。。