When is a residue a residue.
D000821:Animal Feed / Q000032:analysis* / Q000633:toxicity; D000818:Animals; D001682:Biological Availability; D001822:Body Burden; D002273:Carcinogens; D005503:Food Additives / Q000032:analysis* / Q000378:metabolism / Q000633:toxicity; D005506:Food Contamination; D011868:Radioisotopes; D013329:Structure-Activity Relationship
D002273:Carcinogens; D005503:Food Additives; D011868:Radioisotopes