Uaboi-Egbenni, P. O.1, Bessong, P. O.1, Samie, A.1 and Obi, C. L.2
1University of Venda, Department of Microbiology, P. M. B. X5050, Thohoyandou, Limpopo Province, South Africa.
2Academic Affairs and Research, Walter Sisulu University, Mthatha, Eastern Cape, South Africa.
