title: Demonstration of hematogenous origin of fibroblasts by parabiosis.
mesh_terms: D000818:Animals; D005347:Fibroblasts / Q000378:metabolism; D006412:Hematopoietic Stem Cells / Q000528:radiation effects; D010227:Parabiosis; D051381:Rats; D013936:Thymidine / Q000378:metabolism; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine