sentences:  The Linkage Genetics unit was combined with Zoogen to form PE AgGen, focused on genetic analysis services for plant and animal breeding.The PE Applied Biosystems division partnered with Hyseq, Inc., for work on the new DNA chip technology, and also worked with Tecan U.S., Inc., on combinatorial chemistry automation systems, and also with Molecular Informatics, Inc. on genetic data management and analysis automated systems.In 1998, PE Applied Biosystems became PE Biosystems, and the division's revenues reached US$921.8 million.