title: Studies on the helminth fauna of Alaska. LI. Observations on eggshell formation in some diphyllobothriid cestodes.
mesh_terms: D000413:Alaska; D000818:Animals; D004169:Diphyllobothriasis / Q000453:epidemiology / Q000662:veterinary; D004170:Diphyllobothrium / Q000166:cytology* / Q000254:growth & development; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*