title: Time-dependent synergism of rats spleen and bone marrow cells.
mesh_terms: D000367:Age Factors; D000818:Animals; D000941:Antigens; D001853:Bone Marrow / Q000378:metabolism*; D001854:Bone Marrow Cells; D046508:Culture Techniques; D004912:Erythrocytes; D008297:Male; D051381:Rats; D012756:Sheep; D013154:Spleen / Q000378:metabolism*; D013936:Thymidine / Q000378:metabolism*; D013997:Time Factors; D014316:Tritium
chemical_list: D000941:Antigens; D014316:Tritium; D013936:Thymidine