Pneumocystis carinii in a pig.
D000818:Animals; D008168:Lung / Q000469:parasitology / Q000648:ultrastructure; D011010:Pneumocystis / Q000648:ultrastructure; D011020:Pneumonia, Pneumocystis / Q000469:parasitology* / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000469:parasitology