kГ¶p stromectol For ROS and NO neutralizing experiments, once the cells were replenished with serum free media, the cells were pre incuated with either N acetyl cysteine NAC, 5 mM or L N G Nitroarginine methyl ester L NAME, 10 ОјM for 1 h followed by the addition of MP 100 Ојg ml for a further period of 24 h