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原標題：国产乱子伦小说短篇

　　先??(xian)天??(tian)性??(xing)免??(mian)疫??(yi)是??(shi)人??(ren)類??(lei)與??(yu)生??(sheng)俱??(ju)來?(lai)的??(de)防??(fang)御??(yu)系??(xi)統(tǒng)??(tong)??，如??(ru)同??(tong)城?(cheng)堡??(bao)的??(de)第??(di)一??(yi)道??(dao)城??(cheng)墻?(qiang)和??(he)巡??(xun)邏??(luo)衛(wèi)??(wei)兵??(bing)??，能??(neng)在??(zai)病??(bing)原??(yuan)體??(ti)入??(ru)侵??(qin)時??(shi)迅?(xun)速??(su)反??(fan)應??(ying)?。??　　成??(cheng)年??(nian)期??(qi)是??(shi)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)“黃??(huang)金?(jin)時??(shi)代??(dai)”??，功??(gong)能??(neng)趨??(qu)于??(yu)穩(wěn)?(wen)定??(ding)??，但??(dan)不??(bu)良??(liang)生??(sheng)活??(huo)習??(xi)慣?(guan)可??(ke)能??(neng)引??(yin)發(fā)??(fa)“隱??(yin)形??(xing)危??(wei)機??(ji)”??。??這??(zhe)一?(yi)時??(shi)期??(qi)的?(de)免??(mian)疫??(yi)特??(te)點?(dian)主??(zhu)要??(yao)是??(shi)兩??(liang)個?(ge)方??(fang)面??(mian)??，一??(yi)是??(shi)胸??(xiong)腺??(xian)萎??(wei)縮??(suo)??，新??(xin)生??(sheng)T細??(xi)胞??(bao)減??(jian)少??(shao)??，依??(yi)賴??(lai)記??(ji)憶??(yi)T細?(xi)胞??(bao)應??(ying)對??(dui)病?(bing)原??(yuan)體??(ti)；二??(er)是??(shi)慢??(man)性??(xing)炎??(yan)癥??(zheng)??，吸??(xi)煙??(yan)、肥??(fei)胖??(pang)、壓?(ya)力??(li)等??(deng)導??(dao)致??(zhi)低??(di)度??(du)炎??(yan)癥??(zheng)??，增??(zeng)加??(jia)糖??(tang)尿??(niao)病??(bing)、心??(xin)血??(xue)管??(guan)疾??(ji)病??(bing)風??(feng)險??(xian)??。。