A Experimental scheme FosTRAP mice were placed in constant darkness for 2 days and were then given injections of either 150 mg kg TM or 50 mg kg 4 OHT at varying times relative to a 1 h diffuse light stimulus priligy and viagra combination The enzyme CKrapidly provides ATP for enzymes leading to vasoconstriction, includingmyosin light chain kinase 11, 12, 72, 73