sentences:  New instruments were developed and sold for forensic human identification, protein identification and characterization, metabolite pathway identification, and lead compound identification from combinatorial libraries.On April 27, 1999, the shareholders of Perkin-Elmer Corporation approved the reorganization of Perkin-Elmer into PE Corporation, a pure-play life science company.Each share of the Perkin-Elmer stock (PKN) was to be exchanged for one share and for of a share respectively of the two new common share tracking stocks for the two component Life Sciences groups, PE Biosystems Group and Celera Genomics Group.