NEW YORK (AP) — Shares of some top biotechnology companies are down at 10 a.m.:
Amgen Inc. fell $.24 or .3 percent, to $83.63.
Biogen Idec fell $.56 or .4 percent, to $144.36.
Celgene Corp. fell $.80 or 1.1 percent, to $70.80.
Gilead Sciences Inc. fell $.03 or .1 percent, to $56.45.