NEW YORK, May 30, 2007 (PRIME NEWSWIRE) -- Cephalon, Inc. (Nasdaq:CEPH) of Frazer, Pennsylvania, will become a component of the NASDAQ-100 Index(r) (Nasdaq:NDX), the NASDAQ-100 Equal Weighted Index (Nasdaq:NDXE), and the NASDAQ-100 Ex-Tech Sector Index (Nasdaq:NDXX) prior to market open on Friday, June 1, 2007. Cephalon, Inc. will replace MedImmune, Inc. (Nasdaq:MEDI).
