title: Cell-cell recognition: positioning and patterning systems.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000502:physiology; D002448:Cell Adhesion; D002450:Cell Communication; D002465:Cell Movement; D002633:Chemotaxis; D006183:H-2 Antigens; D051379:Mice; D008954:Models, Biological; D009024:Morphogenesis; D013601:T-Lymphocytes / Q000502:physiology
chemical_list: D006183:H-2 Antigens