title: Cooperative cell interactions in pure and mixed culture.
mesh_terms: D000818:Animals; D002455:Cell Division; D002460:Cell Line; D002478:Cells, Cultured; D005347:Fibroblasts; D006801:Humans; D007700:Kinetics; D007739:L Cells; D008297:Male; D051379:Mice; D010413:Penis