The effect of cortisone on populations of Ostertagia ostertagi of uniform age.
D000818:Animals; D002417:Cattle; D002418:Cattle Diseases; D003348:Cortisone / Q000494:pharmacology*; D005243:Feces; D014251:Trichostrongyloidea / Q000187:drug effects*; D014252:Trichostrongyloidiasis / Q000662:veterinary
D003348:Cortisone