title: Distribution and depletion of radioactivity in hens treated dermally with 14C-labeled permethrin.
abstract: The 25/75 cis-trans mixture of permethrin (BW21Z), one of the new broad-spectrum pyrethroid insecticides, was labeled with 14C in the alcohol methylene carbon moiety and mist sprayed at two rates (3.77 or 11.94 mg/hen) on 28 hens. Peak permethrin equivalents in both treatment groups were found in the skins, .414 and l.69 ppm, respectively. Total permethrin equivalents peaked 3 days after treatment, but permethrin equivalents in eggs peaked 5 days after treatment.
mesh_terms: D000273:Adipose Tissue / Q000378:metabolism; D000287:Administration, Topical; D000818:Animals; D002645:Chickens / Q000378:metabolism*; D004531:Eggs / Q000032:analysis; D005260:Female; D007668:Kidney / Q000378:metabolism; D011722:Pyrethrins / Q000008:administration & dosage* / Q000378:metabolism; D012867:Skin / Q000378:metabolism*
chemical_list: D011722:Pyrethrins