“Effect of Alkaloids Extracts From Solanum Nigrum L.(Solanaceae) in DNA -Plasmid PBR322 by Using Gel Electrophoresis”. Ibn AL-Haitham Journal For Pure and Applied Sciences, vol. 21, no. 1, Sept. 2017, pp. 13-23, https://jih.uobaghdad.edu.iq/index.php/j/article/view/1367.