Changes in some biochemical and haematological indices including serum protein, haemoglobin, cholesterol, lipid peroxidation, white blood cells, Glutathione-s-transferase, Superoxide dismutase, Alanine transaminase, Aspartate transaminase and Alkaline phosphatase were investigated in male rats fed with a diet supplemented with leaves of Gnetum africanum.The histological changes on the liver,…