Sriwidodo, Iman P. Maksum, Riswanto N, Tina Rostinawati, and Toto Subroto. “Extracellular Secretion Recombinant of Human Epidermal Growth Factor (hEGF) Using Pectate Lyase B (PelB) Signal Peptide in Escherichia Coli BL21(DE3)”. International Journal of Research in Pharmaceutical Sciences 8, no. 1 (January 10, 2017): 33-40. Accessed April 23, 2021. https://pharmascope.org/ijrps/article/view/562.