sentences:  In January 1998 Perkin-Elmer acquired PerSeptive Biosystems (formerly of Framingham, Massachusetts.It was a leader in the bio-instrumentation field where it made biomolecule purification systems for protein analysis.Noubar B. Afeyan, Ph.D., had been the founder, Chairman, and CEO of PerSeptive, and with the Perkin-Elmer successor company he set up the later tracking stock for Celera.