Altamirano, C., A. Illanes, R. Canessa, and S. Becerra. “Specific Nutrient Supplementation of Defined Serum-Free Medium for the Improvement of CHO Cells Growth and T-PA Production”. Electronic Journal of Biotechnology, vol. 9, no. 1, Jan. 2006, pp. 0-0, https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v9n1-8.