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　　準(zhǔn)??(zhun)確??(que)來(lái)??(lai)說(shuō)??(shuo)??，免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)需??(xu)要??(yao)的??(de)是?(shi)“精??(jing)準(zhǔn)??(zhun)調(diào)??(tiao)控??(kong)”??，而??(er)非??(fei)“盲??(mang)目??(mu)增??(zeng)強(qiáng)??(qiang)”??。??過(guò)??(guo)度??(du)激??(ji)活??(huo)的??(de)免??(mian)疫??(yi)反??(fan)應(yīng)?(ying)如??(ru)同??(tong)失??(shi)控??(kong)的??(de)軍??(jun)隊(duì)??(dui)??，不?(bu)僅??(jin)無(wú)?(wu)法??(fa)保??(bao)護(hù)?(hu)健?(jian)康??(kang)??，反??(fan)而??(er)會(huì)??(hui)引??(yin)發(fā)??(fa)內(nèi)??(nei)亂??(luan)??。　　首??(shou)先??(xian)要??(yao)識(shí)??(shi)別?(bie)“自??(zi)我??(wo)”與??(yu)“非?(fei)我?(wo)”??。??通??(tong)過(guò)??(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(lái)??(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)??。。