NORDION INC. $14 (www.nordion.com) recently accepted a $13.00 U.S.-a-share friendly takeover bid from Sterigenics, a privately held Illinois firm that sterilizes surgical tools, drug ingredients and other materials. Competition regulators in Canada and the U.S. have decided not to challenge the sale. The deal still needs other approvals, but Sterigenics expects to complete it by the end of 2014. Hold.