Nonviral Production of Human Interleukin-7 in Spodoptera Frugiperda Insect Cells as a Soluble Recombinant Protein

Growth curves of the stably transfected Sf9 producing hIL-7 and nontransfected Sf9 insect cells. (a) Viable cell density, total cell density, and viability of stably transfected Sf9 with pIE1/153A (V4)/hIL-7 plasmid. Cells were seeded at a density of  cells·mL⁻¹ and maintained at  cells·mL⁻¹. (b) Viable cell density, total cell density, and viability of nontransfected Sf9 insect cells. Cells were seeded at a density of  cells·mL⁻¹ ().