7Riviere J.E, Spoo J.W. Chemic alresidues in tissues of food animals [A].Adams H.R. Veterinary Pharmacology and Therapeutics 7th ed [M]. Ames: Iowa State University Press, 1995, 1148-1156.
8Cerniglia C.E, Kotarski S. Evaluation of veterinary drug residues in food for their potential to affect human intestinal microflora[J].Regulatory Toxicology and Pharmacology, 1999,19(3):238-261.
9Mokhtar S, Behairr N, Sherbini E, et al. Qualitative and quantitative evaluation of aerobic microflora of the colon in bilharzial patients before and after praziquantel therapy[J] Egyptian J Bilhaziasis, 1988, 10(1): 111-120.