Also

* Drug makers Elan Corp. and Biogen Idec Inc. said they expected U.S. regulators to decide in March whether their suspended multiple-sclerosis treatment Tysabri can return to the American market.

* Broadcom Corp., a maker of chips for cable and satellite TV equipment, agreed to buy closely held Sandburst Corp. for $80 million to add semiconductors for switching Internet traffic.

* Gap Inc. said EBay Inc. Chief Executive Meg Whitman would not seek reelection to the company’s board. Whitman said she needed to devote additional time and resources to EBay.

* Yahoo Inc. is opening its first research labs in Europe and South America, continuing a quest to close the gap separating it from online search engine leader Google Inc. The new offices are in Spain and Chile.