NEW YORK (AP) -- Shares of some top biotechnology companies are mixed at 10 a.m.:
Amgen Inc. rose $.64 or .6 percent, to $105.61.
Biogen Idec fell $1.82 or .8 percent, to $226.17.
Celgene Corp. rose $.43 or .3 percent, to $123.91.
Gilead Sciences Inc. rose $.55 or 1.0 percent, to $55.51.
