title: The ultrastructure of nuclear division in a suctorian, Tokophrya infusionum.
mesh_terms: D002455:Cell Division; D002467:Cell Nucleus; D016798:Ciliophora / Q000166:cytology*; D003078:Colchicine / Q000494:pharmacology; D008854:Microscopy, Electron; D012098:Reproduction
chemical_list: D003078:Colchicine