Press Release - December 15, 2009

XenoTech Introduces CryostaX™, an Innovative Single-Freeze Source for Human Hepatocytes

XenoTech LLC, specialists in evaluation of drug candidates in vitro, is proud to introduce the latest innovation in the field of cryopreserved pooled human hepatocytes: CryostaX™.

CryostaX™ is the largest single-freeze pool of cryopreserved human hepatocytes. This patent-pending single-freeze product offers large lots of hepatocytes that allow long-term predictable results. Like all off the XenoTech products, CryostaX™ undergoes a thorough data review to ensure a dependable, high-quality source of human hepatocytes - an integral part of any drug development program.

"CryostaX™ is an example of our continuous commitment to provide the best products to advance in vitro drug development research," said Andrew Parkinson, XenoTech's CEO/Chief Scientific Officer.

XenoTech LLC is a Contract Research Organization with years of expertise in optimizing in vitro test systems and study designs to meet the ever-changing demands of scientific achievement.

"We're committed to producing high quality scientific tools that provide great value for pharmaceutical researchers," said Parkinson. "In addition to quality and value offered today, CryostaX™ allows for future customization of pooled human hepatocytes for the in-depth pursuit of safe drug candidates."

About XenoTech L.L.C.
XenoTech, founded by Dr. Andrew Parkinson in 1994, is a Contract Research Organization with unparalleled experience and expertise in evaluating drug candidates as substrates, inhibitors and inducers of cytochrome P450 enzymes. The Company offers a variety of in vitro contract studies for drug candidate evaluation, as well as an extensive selection of products for drug metabolism research. XenoTech's product selection includes a wide-range of high quality standard reagents, from subcellular fractions and hepatocytes to transporter membranes. The Company can also prepare and deliver custom-designed products and services in response to client requests. XenoTech is based in Lenexa, Kansas, U.S.A. and has approximately 110 employees. For additional information, please refer to the company's web site at www.xenotechllc.com.