T细胞亚群及记忆细胞•Morethan100functionallydistinctpopulationsoflymphocytescanbeidentifiedintheperipheralbloodofhumans.•Itisnolongertenabletostudyimmune-relatedeffectsusing“bulk”lymphocytespopulationssuchas“memoryCD8+Tcells”.•Investigationofthe“fine”lymphocytesubsetsisnecessarytounderstandthemechanismsofimmunologicaldis...