The aim of the present study was to evaluate radio-protective effect of Gymnema sylvestre and its active compound gymnemagenin against gamma radiation(60Co) in Pangasius sutchi. The fishes were treated with lowest concentration of amifostine (83.3 mg/kg of b.wt.), G. sylvestre plant-extract (25 mg/kg of b.wt.), and gymnemagenin (0.3 mg/kg...