... Author for correspondence: e-mail: Susan.K.Paulson!monsanto.com Xenobiotica ISSN 0049-8254 print}ISSN 1366 ... 0.2 vol. 1 N ... 735 Dog plasma samples (C 1 ml) were extracted with an equal volume of acetonitrile, mixed by vortexing and then centrifuged at 1000 g for 10 min. ...