NEW YORK (AP) -- Shares of some top biotechnology companies were mixed at the close of trading:
Amgen Inc. rose $.29 or .3 percent, to $104.53.
Biogen Idec rose $1.74 or .8 percent, to $233.07.
Celgene Corp. fell $.06 or percent, to $123.44.
Gilead Sciences Inc. fell $.54 or 1.0 percent, to $55.93.
