title: Characteristics of parasite populations in endemic trichostrongylidosis.
mesh_terms: D000018:Abomasum / Q000473:pathology; D000818:Animals; D001683:Biological Clocks; D004906:Erythrocyte Count; D005243:Feces / Q000382:microbiology; D005260:Female; D006799:Housing, Animal; D007421:Intestine, Small / Q000473:pathology; D008297:Male; D010270:Parasite Egg Count; D012737:Sex Factors; D012756:Sheep; D012757:Sheep Diseases / Q000473:pathology*; D013997:Time Factors; D014251:Trichostrongyloidea / Q000254:growth & development / Q000302:isolation & purification; D014252:Trichostrongyloidiasis / Q000473:pathology / Q000662:veterinary*