Chikezie P.C, Akuwudike A. R and Chikezie C. M 2012. Membrane stability and methaemoglobin content of human erythrocytes incubated in aqueous leaf extract of Nicotiana tabacum product. Free Radicals and Antioxidants. 2, 4 (Dec. 2012), 56–61. DOI:https://doi.org/10.5530/ax.2012.4.10.