title: Parabiosis of parental mice with one or two F1 hybrids.
mesh_terms: D000818:Animals; D000941:Antigens; D001284:Atrophy; D002455:Cell Division; D003433:Crosses, Genetic; D006824:Hybridization, Genetic; D008206:Lymphatic Diseases / Q000209:etiology; D008221:Lymphoid Tissue / Q000473:pathology; D008722:Methods; D051379:Mice; D008810:Mice, Inbred C57BL; D008808:Mice, Inbred CBA; D010227:Parabiosis
chemical_list: D000941:Antigens