title: Variations of synlophe of Orientostrongylus ezoensis Tada, 1975 (Nematoda: Heligmonellidae) among different populations in Japan.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D000835:Animals, Wild; D005260:Female; D007564:Japan; D008297:Male; D008855:Microscopy, Electron, Scanning; D051381:Rats / Q000469:parasitology*; D013045:Species Specificity; D014251:Trichostrongyloidea / Q000033:anatomy & histology* / Q000145:classification