title: Developmental switches in the immune system.
authors.affiliation: Department of Pathology, Stanford University School of Medicine, California 94305.
authors.forename: I L
authors.initials: IL
authors.lastname: Weissman
mesh_terms: D000818:Animals; D016923:Cell Death; D002454:Cell Differentiation; D005865:Gestational Age; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000166:cytology; D006801:Humans; D007109:Immunity; D007111:Immunity, Cellular; D008221:Lymphoid Tissue / Q000166:cytology / Q000254:growth & development* / Q000276:immunology; D016201:Receptors, Lymphocyte Homing / Q000502:physiology; D013950:Thymus Gland / Q000166:cytology
chemical_list: D016201:Receptors, Lymphocyte Homing