Figure 1. Albumin is used in cell culture media as a replacement for serum because of its positive effect on cell growth and productivity (1,2,3). Albumin is a known transporter of nutrients, lipids, and it removes toxins and waste products (2,3). Albumin is a classic performance-enhancing ingredient in many serum-free media formulations (1). However beneficial, plasma-derived albumin is undesirable because animal products present potential contamination by infectious agents. Cellastim™ recombinant human serum albumin is an animal-free albumin specifically developed for…