title: Remarks on the role of microtubules in enucleating normoblasts.
abstract: In enucleating normoblasts single microtubules are often arranged in a perinuclear position. Sometimes it seems that microtubules attach at the nucleus membrane. Also bundles of microtubules can be found, but a subplasmalemmal microtubular "hoop" does not exist. Colchicine does not influence the process of enucleation. It is concluded that microtubules do not participate in the expulsion of the nucleus during enucleation.
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells; D002467:Cell Nucleus / Q000187:drug effects; D003078:Colchicine / Q000494:pharmacology; D004900:Erythroblasts / Q000187:drug effects / Q000648:ultrastructure*; D008854:Microscopy, Electron; D008870:Microtubules / Q000648:ultrastructure*; D011817:Rabbits
chemical_list: D003078:Colchicine