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學習快評丨qibao666888　　許??(xu)多??(duo)人??(ren)誤??(wu)以??(yi)為??(wei)“免??(mian)疫??(yi)力?(li)越??(yue)強??(qiang)越??(yue)好??(hao)”??，盲??(mang)目??(mu)服??(fu)用??(yong)補??(bu)品??(pin)、濫??(lan)用??(yong)保??(bao)健??(jian)品??(pin)??，結(jié)??(jie)果??(guo)反??(fan)而??(er)引??(yin)發(fā)?(fa)過??(guo)敏??(min)、自??(zi)身?(shen)免??(mian)疫??(yi)病??(bing)等?(deng)問??(wen)題??(ti)??。??事??(shi)實??(shi)上??(shang)??，免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)的??(de)精??(jing)髓??(sui)在??(zai)于??(yu)“動?(dong)態(tài)??(tai)平??(ping)衡??(heng)”——既??(ji)能??(neng)高??(gao)效??(xiao)防??(fang)御??(yu)??，又??(you)不??(bu)失??(shi)控??(kong)攻??(gong)擊??(ji)自??(zi)身?(shen)??。這??(zhe)種??(zhong)平??(ping)衡??(heng)一??(yi)旦??(dan)被?(bei)打??(da)破??(po)??，就??(jiu)像??(xiang)過??(guo)度??(du)緊??(jin)繃??(beng)的??(de)琴??(qin)弦??(xian)??，稍??(shao)有?(you)不??(bu)慎??(shen)便??(bian)會??(hui)走??(zou)音??(yin)或??(huo)斷??(duan)弦??(xian)??。　　嬰??(ying)幼??(you)兒?(er)期??(qi)(0～3歲?(sui))??，新??(xin)生??(sheng)兒??(er)免??(mian)疫??(yi)系??(xi)統(tǒng)??(tong)像??(xiang)一??(yi)支??(zhi)未?(wei)經(jīng)??(jing)實??(shi)戰(zhàn)??(zhan)的??(de)“新??(xin)兵??(bing)部??(bu)隊??(dui)”??，先??(xian)天??(tian)性??(xing)免??(mian)疫??(yi)(如??(ru)中?(zhong)性??(xing)粒??(li)細??(xi)胞??(bao)、巨??(ju)噬??(shi)細??(xi)胞??(bao))活??(huo)性??(xing)高??(gao)??，但??(dan)皮??(pi)膚??(fu)、黏??(nian)膜??(mo)屏??(ping)障??(zhang)薄??(bo)弱??(ruo)??，易??(yi)受??(shou)病??(bing)毒??(du)(如??(ru)呼??(hu)吸??(xi)道??(dao)合??(he)胞??(bao)病??(bing)毒??(du)、輪?(lun)狀??(zhuang)病??(bing)毒??(du))侵??(qin)襲??(xi)?。??此??(ci)時??(shi)主??(zhu)要??(yao)依??(yi)賴??(lai)母??(mu)體??(ti)通??(tong)過?(guo)胎??(tai)盤??(pan)和??(he)母??(mu)乳??(ru)傳??(chuan)遞??(di)的??(de)抗??(kang)體?(ti)(如??(ru)IgG、IgA)提??(ti)供??(gong)保??(bao)護??(hu)?。。