On the interaction between Heterakis gallinarum, Ascaridia galli, "blackhead" and the chicken.
D000818:Animals; D001197:Ascaridia; D017162:Ascaridida; D002645:Chickens; D003872:Dermatitis; D009349:Nematode Infections / Q000662:veterinary*; D011200:Poultry / Q000469:parasitology*
NEMATODE INFECTIONS/veterinary; POULTRY/parasitology