2025-03-23 13:27:38 來(lái)源:新華網(wǎng)
原標(biāo)題:欧美zoofilia杂交videos
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)??。 免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)核??(he)心??(xin)使??(shi)命??(ming)不??(bu)是??(shi)“消??(xiao)滅??(mie)一??(yi)切??(qie)”??,而??(er)是??(shi)識(shí)??(shi)別??(bie)敵??(di)我??(wo)、清??(qing)除??(chu)威??(wei)脅??(xie)??。??。