title: Scanning electron microscope observations on some life history stages of Carchesium polypinum (Ciliata, Peritrichia).
mesh_terms: D000818:Animals; D002923:Cilia; D016798:Ciliophora / Q000166:cytology* / Q000254:growth & development; D008675:Metamorphosis, Biological; D008855:Microscopy, Electron, Scanning