Headquartered in San Diego, California, Pf?nex Inc. is a leading biotechnology company focused on recombinant protein expression for a broad range of applications including therapeutic proteins, vaccines, research, reagents and biosimilars. The Company's core technology, Pf?nex Expression Technology™, is a cutting edge protein expression platform that utilizes the BSL-1 microorganism Pseudomonas fluorescens. Pf?nex Expression Technology™ combines an extensive toolbox of expression components with a robotically enabled high throughput parallel strain screening technology, delivering unprecedented speed and success in identifying protein production strains expressing high titers of soluble active protein.