1Center for Research on Medicinal Plants and Traditional Medicine, Institute of Medical Research and Studies of Medicinal Plants (IMPM), Yaounde, Cameroon
2Cellomics and Toxicogenomics Research Laboratory, NIH-RCMI Center for Environmental Health, Jackson State University, Jackson, USA
3Molecular Toxicology Research Laboratory, NIH-Center for Environmental Health, College of Science, Engineering and Technology, Jackson State University, Jackson, Mississippi, USA