title: Influence of bone marrow and spleen microenvironments on the production of thymic progenitors.
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D003114:Colony-Forming Units Assay; D005260:Female; D006410:Hematopoiesis; D008297:Male; D051379:Mice; D008806:Mice, Inbred AKR; D011828:Radiation Chimera; D013154:Spleen / Q000166:cytology*; D013950:Thymus Gland / Q000166:cytology*; D013997:Time Factors