title: Shaping of the sperm nucleus in Marsilea: a distinction between factors responsible for shape generation and shape determination.
mesh_terms: D002467:Cell Nucleus / Q000648:ultrastructure*; D003078:Colchicine / Q000494:pharmacology; D008297:Male; D008854:Microscopy, Electron; D009685:Nuclear Envelope / Q000648:ultrastructure; D063245:Plant Development; D010944:Plants / Q000648:ultrastructure*; D013087:Spermatids / Q000187:drug effects / Q000502:physiology / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*
chemical_list: D003078:Colchicine