Annisa Indriyani; Nenden Indriyani Anggraeni; Sriwidodo; Iman Permana Maksum. Optimization Extracellular Secretion of Recombinant Human Epidermal Growth Factor (hEGF) in Escherichia Coli BL21 (DE3) pD881-OmpA-HEGF by Using Response Surface Method (RSM). Int. J. Res. Pharm. Sci. 2019, 10, 1824-1831.