title: Morphological characterizatioon of the stage of arrested development of Haemonchus contortus in sheep.
mesh_terms: D000818:Animals; D004463:Ecology; D007814:Larva / Q000033:anatomy & histology / Q000254:growth & development; D012621:Seasons; D012756:Sheep; D012757:Sheep Diseases / Q000209:etiology; D014251:Trichostrongyloidea / Q000254:growth & development*; D014252:Trichostrongyloidiasis / Q000209:etiology