Hassani, Hayfa H., and Rawa'a J. Toma. “Influence of Various Levels of L-Asparaginase II Purification on the Cytotoxicity, DNA Level, and Apoptosis in Hep-2 Cells”. Journal of Biotechnology Research Center (JOBRC), vol. 4, no. 2, June 2010, pp. 46-52, doi:10.24126/jobrc.2010.4.2.121.