title: Comparison of immature B-cell populations in neonates and adults.
mesh_terms: D000328:Adult; D000375:Aging; D001402:B-Lymphocytes / Q000166:cytology* / Q000276:immunology; D001853:Bone Marrow / Q000254:growth & development; D001854:Bone Marrow Cells; D002454:Cell Differentiation; D006801:Humans; D007231:Infant, Newborn; D010641:Phenotype