Halim, N.; Abdul Ghani, R. .; Sahabudin, . A. H. .; Ni Fong, F. H. . An Investigation on Cytotoxicity Effect of Putrescine-Sulphur Analogues on Breast Cancer (Mcf-7), Human Lung Adenocarcinoma (A549) and Colorectal Cancer (Hct-8) Cell Lines. imjm 2017, 16.