NEW YORK (AP) -- Shares of some top biotechnology companies are mixed at 10 a.m.:
Amgen Inc. fell $.87 or .8 percent, to $104.75.
Biogen Idec fell $2.02 or .9 percent, to $230.61.
Celgene Corp. fell $.91 or .7 percent, to $122.73.
Gilead Sciences Inc. rose $.44 or .8 percent, to $55.92.
