Iyawe, Hanson, and Azih M.C. 2015. “In Vivo Evaluation of Graded Fresh Leave Extracts of Vernonia Amygdalina and Ocimum Gratissimum on Some Oxidative Stress Indicators in Rats”. Biomedical Research and Therapy 2 (07), 333-38. http://bmrat.biomedpress.org/index.php/BMRAT/article/view/56.