Deals of the day- Mergers and acquisitions
(Adds Eni, Viacom, KeyCorp and Bilfinger)
April 28 (Reuters) - The following bids, mergers, acquisitions and disposals were reported by 2000 GMT on Thursday:
** Abbott Laboratories said it agreed to buy medical device maker St. Jude Medical Inc for $25 billion as it looks to add heft to its heart devices business.
** French drugmaker Sanofi went public with a $9.3 billion offer to buy Medivation on Thursday, setting up what could be a lengthy takeover fight after the U.S. cancer firm rebuffed its approaches.
** AbbVie Inc said it would buy privately held oncology company Stemcentrx in a deal valued at $5.8 billion to expand its portfolio of drugs to treat cancer.