title: Developmental systems without cellular interactions, their languages and grammars.
mesh_terms: D002454:Cell Differentiation; D002455:Cell Division; D006128:Growth; D007802:Language; D007804:Language Development; D008433:Mathematics; D008954:Models, Biological; D009024:Morphogenesis; D063245:Plant Development; D000461:Rhodophyta / Q000254:growth & development; D012908:Snails / Q000196:embryology