NEW YORK (AP) -- Shares of some top biotechnology companies are mixed at 1 p.m.:
Amgen Inc. fell $.13 or .1 percent, to $104.84.
Biogen Idec fell $3.07 or 1.3 percent, to $224.92.
Celgene Corp. fell $.34 or .3 percent, to $123.14.
Gilead Sciences Inc. rose $.58 or 1.1 percent, to $55.54.
