LANCASTER, Calif.--(BUSINESS WIRE)--Simulations Plus, Inc. (AMEX:SLP), a leading provider of simulation and modeling software for pharmaceutical discovery and development, and Enslein Research, Inc., of Rochester, New York, announced today that they have signed a collaboration agreement that will provide Simulations Plus with exclusive access to a database of metabolism measurements for an important group of Cytochrome P450 (CYP) enzymes that are involved in the metabolism of a large number of drug-like molecules.