title: Observations on crystals found in the intestinal cells of Haemonchus contortus and in the intestinal lumen of Ostertagia ostertagi.
mesh_terms: D000018:Abomasum / Q000469:parasitology; D000818:Animals; D003461:Crystallography; D006189:Haemonchus / Q000648:ultrastructure*; D002479:Inclusion Bodies / Q000032:analysis / Q000648:ultrastructure; D007422:Intestines / Q000648:ultrastructure; D007814:Larva / Q000648:ultrastructure; D008074:Lipoproteins / Q000032:analysis; D012756:Sheep / Q000469:parasitology*; D013045:Species Specificity; D013455:Sulfur / Q000032:analysis; D014251:Trichostrongyloidea / Q000648:ultrastructure*
chemical_list: D008074:Lipoproteins; D013455:Sulfur