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學(xué)習(xí)快評(píng)丨qibao666888　　第??(di)二??(er)道??(dao)防??(fang)御??(yu)是??(shi)“清??(qing)道??(dao)夫??(fu)軍??(jun)團(tuán)??(tuan)”??，負(fù)??(fu)責(zé)??(ze)吞??(tun)噬??(shi)與??(yu)清??(qing)掃??(sao)??。?中??(zhong)性??(xing)粒??(li)細(xì)??(xi)胞??(bao)24小??(xiao)時(shí)??(shi)在??(zai)血??(xue)液??(ye)中??(zhong)“巡??(xun)邏??(luo)”??，一??(yi)旦??(dan)發(fā)??(fa)現(xiàn)??(xian)病??(bing)原?(yuan)體??(ti)??，立??(li)刻?(ke)沖??(chong)鋒??(feng)吞??(tun)噬??(shi)??。巨??(ju)噬??(shi)細(xì)??(xi)胞??(bao)如??(ru)同??(tong)“清??(qing)障??(zhang)車??(che)”??，負(fù)??(fu)責(zé)??(ze)吞??(tun)噬??(shi)病??(bing)原??(yuan)體??(ti)并??(bing)發(fā)??(fa)出??(chu)警??(jing)報(bào)?(bao)信??(xin)號(hào)??(hao)??，召??(zhao)集??(ji)其??(qi)他??(ta)免??(mian)疫??(yi)細(xì)??(xi)胞??(bao)參?(can)戰(zhàn)??(zhan)???！　±??(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(yàn)??(yan)豐??(feng)富??(fu)但??(dan)機(jī)??(ji)能??(neng)衰??(shuai)退??(tui)??，需??(xu)針??(zhen)對(duì)??(dui)性??(xing)維??(wei)護(hù)??(hu)以??(yi)降??(jiang)低??(di)重??(zhong)癥??(zheng)風(fēng)??(feng)險(xiǎn)??(xian)??。??這??(zhe)一??(yi)時(shí)??(shi)期??(qi)的??(de)免??(mian)疫??(yi)特??(te)點(diǎn)??(dian)??，一??(yi)是??(shi)T細(xì)??(xi)胞??(bao)功??(gong)能??(neng)退??(tui)化??(hua)??，記??(ji)憶??(yi)T細(xì)??(xi)胞??(bao)主??(zhu)導(dǎo)??(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(yīng)??(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(guān)??(guan)疾??(ji)病??(bing)發(fā)??(fa)病??(bing)風(fēng)??(feng)險(xiǎn)??(xian)上??(shang)升??(sheng)：免??(mian)疫??(yi)監(jiān)??(jian)視??(shi)功??(gong)能?(neng)減??(jian)弱??(ruo)??，無(wú)??(wu)法??(fa)及??(ji)時(shí)??(shi)清??(qing)除??(chu)突??(tu)變??(bian)細(xì)??(xi)胞??(bao)??。。