title: Differentiation and secretion in Volvox.
mesh_terms: D002462:Cell Membrane / Q000648:ultrastructure; D002467:Cell Nucleus / Q000648:ultrastructure; D004721:Endoplasmic Reticulum / Q000648:ultrastructure; D005404:Fixatives / Q000494:pharmacology; D006056:Golgi Apparatus / Q000648:ultrastructure; D009154:Mutation; D018521:Plant Physiological Phenomena; D010944:Plants / Q000648:ultrastructure*; D012270:Ribosomes / Q000648:ultrastructure
chemical_list: D005404:Fixatives