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原標(biāo)題：性欧美巨大乳boob

　　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(xì)??(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(xì)??(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(dǎo)??(dao)致??(zhi)類??(lei)風(fēng)??(feng)濕?(shi)關(guān)??(guan)節(jié)?(jie)炎??(yan)、1型??(xing)糖??(tang)尿??(niao)病??(bing)等??(deng)疾??(ji)病??(bing)???！　∶??(mian)疫?(yi)系??(xi)統(tǒng)??(tong)的??(de)發(fā)??(fa)育??(yu)如??(ru)同??(tong)建??(jian)造??(zao)一??(yi)座?(zuo)城??(cheng)堡?(bao)?，需??(xu)要??(yao)從??(cong)地??(di)基??(ji)開?(kai)始??(shi)逐??(zhu)步??(bu)完??(wan)善??(shan)??。??。