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學習快評丨qibao666888　　首??(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)??。　　第??(di)二??(er)道??(dao)防??(fang)御??(yu)是??(shi)“清??(qing)道??(dao)夫??(fu)軍??(jun)團??(tuan)”??，負??(fu)責??(ze)吞??(tun)噬??(shi)與??(yu)清?(qing)掃??(sao)??。??中??(zhong)性??(xing)粒??(li)細??(xi)胞??(bao)24小??(xiao)時??(shi)在??(zai)血??(xue)液?(ye)中??(zhong)“巡??(xun)邏??(luo)”??，一??(yi)旦??(dan)發(fā)??(fa)現??(xian)病??(bing)原??(yuan)體?(ti)??，立??(li)刻??(ke)沖??(chong)鋒??(feng)吞??(tun)噬??(shi)??。巨??(ju)噬??(shi)細??(xi)胞?(bao)如??(ru)同??(tong)“清??(qing)障??(zhang)車??(che)”??，負??(fu)責??(ze)吞??(tun)噬?(shi)病??(bing)原??(yuan)體??(ti)并?(bing)發(fā)??(fa)出??(chu)警??(jing)報??(bao)信??(xin)號??(hao)??，召??(zhao)集??(ji)其??(qi)他??(ta)免??(mian)疫??(yi)細??(xi)胞??(bao)參??(can)戰(zhàn)??(zhan)??。。