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Journal of Pharmacology and Toxicology 2 ( 6 ): 542 - 550 , 2007
K.J. Umar, L.G. Hassan, H. Usman and R.S.U. Wasagu
Pakistan Journal of Biological Sciences 16 ( 11 ): 536 - 540 , 2013
Y.A. Geidam, H. Usman, M.B. Abubakar and B. Ibrahim
Research Journal of Microbiology 2 ( 12 ): 960 - 965 , 2007
H. Usman, A.H. Yaro and M.M. Garba
Trends in Medical Research 3 ( 1 ): 10 - 15 , 2008