joe durand with united capital financial advisers. >>> a trio of health care deals today wasn't enough to lift the market overall. the largest medical device maker abbott labs' purchase of st. jude medical for $25 billion, the largest deal of the day. buying a cancer drug startup and sanofi making an offer for the biotech company medevation. meg terrell has the details and why there may be more deals to come. >> reporter: not bad for a thursday. three deals or potential deals totally more than $40 billion were announced in the health care space. some wonder if it spells a turnaround for the sector's recent woes. >> if you've looked at biotech values they're down 35% off the top in the last six to eight months on political rhetoric. asset prices have come down and become a lot more attractive. >> reporter: the biggest health care deal of the day, abbott laboratories' $25 billion fur of st. st. jude medical. abbott cardiovascular service and st. jude together will of that revenue of more than $8.5 billion. the company says it's expanding in the area as 40% of american adults are projecte