sentences:  In 1993 Applied Biosystems, Inc., was delisted from the NASDAQ when it was acquired by the old company known then as Perkin-Elmer.As the PE Applied Biosystems Division under that parent in 1998, it became consolidated with other acquisitions as the primary PE Biosystems Division.In 1999 its parent company reorganized and changed its name to PE Corporation, and the PE Biosystems Group (formerly again became publicly traded, as a tracking stock of its parent, along with its sister tracking stock company, Celera Genomics.