On Trichomonas caballi n. sp., a protozoan parasite from the horse.
D000818:Animals; D056890:Eukaryota; D006736:Horses; D007448:Invertebrates; D010271:Parasites; D010527:Perissodactyla / Q000469:parasitology*; D014244:Trichomonas
PERISSODACTYLA/parasitology; PROTOZOA