'effects of high calcium diet on hypertension and electrolyte balance in mineralocorticoid-salt hypertensive rats' benha M. J ' the possible protective effects of nigella sativa crude seeds on gentamicine induced nephrotoxocity in unilateral nephroectomized rats' zagazic j. pharm. Sci. ' the effect of hydroxocobalamin on nitric oxide mediated relaxation inrabbit aorta accepted at 5TH congress of zagazic faculty of medicine ' effect of perindopril ( angiotensin converting enzyme inhibitor) on vasoconstrictor activity of hypertensive rats' benha M.J 'therole of nitic oxide in castor oil induced diarrhea in rats 'J. Egypt .soc. pharmacol. Exp.ther. 'effect of paracetamol on gastric erosions induced by indomethacin in rats' benha M. J