Bone marrow 免疫系统的 pluripotent hematopoietic stem( 细胞 Bone marrow progenitor progenitor megakaryocyte erythroblast progenitor Q@娇o B cell Tcell NK cell dendritic cell neutrophil eosinophil basophil precursor monocyte platelets erythrocyte Lymph nodes Tissues gQ☆ BcellTcell immature endritic cell dendritic cell mast cell macrophage Effector cells pQQ Immunobiology bed activatedactivated plasma cell cellImmunobiology 6ed 免疫系统的 细胞