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　　0～18歲??(sui)??，筑??(zhu)牢??(lao)免??(mian)疫??(yi)根??(gen)基?(ji)??。??　　T細(xì)??(xi)胞??(bao)的?(de)角??(jiao)色??(se)則??(ze)是??(shi)指??(zhi)揮?(hui)、“殺??(sha)敵??(di)”與??(yu)“維??(wei)穩(wěn)??(wen)”??。?比??(bi)如??(ru)輔?(fu)助??(zhu)T細(xì)??(xi)胞??(bao)??，扮??(ban)演??(yan)著??(zhe)“指??(zhi)揮??(hui)官??(guan)”角?(jiao)色??(se)??，通??(tong)過(guò)?(guo)釋??(shi)放??(fang)細(xì)??(xi)胞??(bao)因??(yin)子??(zi)??，激??(ji)活??(huo)B細(xì)??(xi)胞??(bao)和??(he)其??(qi)他??(ta)免??(mian)疫?(yi)細(xì)??(xi)胞?(bao)；細(xì)??(xi)胞??(bao)毒??(du)性?(xing)T細(xì)??(xi)胞??(bao)??，扮??(ban)演??(yan)著??(zhe)“殺??(sha)手?(shou)”角??(jiao)色??(se)??，直??(zhi)接??(jie)穿??(chuan)透??(tou)感??(gan)染?(ran)細(xì)??(xi)胞??(bao)??，注??(zhu)入??(ru)毒??(du)素??(su)將??(jiang)其?(qi)摧??(cui)毀??(hui)；調(diào)??(tiao)節(jié)??(jie)T細(xì)??(xi)胞??(bao)??，扮??(ban)演??(yan)著??(zhe)“維??(wei)穩(wěn)??(wen)員??(yuan)”角??(jiao)色?(se)??，防??(fang)止??(zhi)免??(mian)疫??(yi)反??(fan)應(yīng)??(ying)過(guò)??(guo)度??(du)??，避??(bi)免??(mian)誤??(wu)傷??(shang)健??(jian)康??(kang)組??(zu)織??(zhi)??。。