title: How the immune system develops.
authors.affiliation: Stanford University.
authors.forename: I L
authors.initials: IL
authors.lastname: Weissman
authors.forename: M D
authors.initials: MD
authors.lastname: Cooper
mesh_terms: D005803:Genes, Immunoglobulin; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000166:cytology / Q000276:immunology; D006801:Humans; D007107:Immune System / Q000166:cytology / Q000502:physiology*; D016131:Lymphocyte Subsets / Q000276:immunology