title: Cell interactions in vitro.
mesh_terms: D000818:Animals; D001853:Bone Marrow / Q000648:ultrastructure; D001854:Bone Marrow Cells; D002448:Cell Adhesion; D002450:Cell Communication; D002478:Cells, Cultured; D003114:Colony-Forming Units Assay; D006410:Hematopoiesis; D006412:Hematopoietic Stem Cells / Q000166:cytology; D006801:Humans; D051379:Mice; D013997:Time Factors; D014418:Tupaiidae