The persistance in the blood of hens of organo-phosphoric compounds, applied by different ways.
D000284:Administration, Oral; D000818:Animals; D002645:Chickens; D004478:Ectoparasitic Infestations / Q000188:drug therapy / Q000662:veterinary; D007306:Insecticides / Q000097:blood*; D011201:Poultry Diseases / Q000188:drug therapy; D014236:Trichlorfon / Q000097:blood
D007306:Insecticides; D014236:Trichlorfon