title: The fine structure of the cyst wall of the ciliated protozoon Didinium nastum.
mesh_terms: D000818:Animals; D002462:Cell Membrane; D002467:Cell Nucleus; D002923:Cilia; D016798:Ciliophora / Q000166:cytology*; D003593:Cytoplasm; D002479:Inclusion Bodies; D008675:Metamorphosis, Biological; D008854:Microscopy, Electron; D008870:Microtubules; D008928:Mitochondria; D009940:Organoids; D013997:Time Factors