title: [Studies on the heterogeneity of spleen colony-forming cells].
mesh_terms: D000818:Animals; D006412:Hematopoietic Stem Cells / Q000187:drug effects / Q000502:physiology* / Q000528:radiation effects; D006918:Hydroxyurea / Q000494:pharmacology; D051379:Mice; D013154:Spleen / Q000166:cytology*
chemical_list: D006918:Hydroxyurea