Aron P. Stern

VitaGen, Inc. develops and manufactures extracorporeal liver assisting devices. The company was founded in 1990 and is headquartered in La Jolla, CA.

Protein Polymer Technologies, Inc. operates as a biotechnology company, which engages in the research, development, and production of bio-active devices to improve medical and surgical outcomes. Its technology produces proteins of design, biological and physical product components for optimized clinical performance. The company was founded on July 6, 1988 and is headquartered in San Diego, CA.

4-D Neuroimaging engages in the business of developing, manufacturing and selling medical imaging systems to medical institutions. Its medical imaging system allows physicians to monitor the body functions and provides an important tool to unravel how the brain functions. The company develops Magnetoencephalography systems to measure magnetic fields created by the human body for the noninvasive diagnosis of certain medical disorders, primarily in the brain. 4-D Neuroimaging was founded in 1970 and is headquartered in San Diego, CA.

Vital Therapies, Inc. operates as a biotherapeutic company, which develops a cell-based therapy targeting the treatment of acute forms of liver failure. Its product candidate, ELAD System, is a human cell-based bio-artificial liver support system that operates outside the body or extracorporeal. The company was founded in May 2003 and is headquartered in San Diego, CA.