America Online of Dulles plans to announce today that it bought Wildseed of Kirkland, Wash., which makes software to customize features on wireless phones and deliver entertainment. AOL has reorganized its wireless unit to focus on making it easier for cell-phone users to use multimedia, Web pages and messaging, and the new acquisition will be part of that initiative. Terms were not disclosed.

General Dynamics of Falls Church bought Itronix of Spokane, Wash., a maker of rugged wireless computers for markets including the military, public safety and utilities. Terms were not disclosed.

NCRIC Group, a District-based medical malpractice insurance company, completed its merger with ProAssurance, a larger, Alabama-based insurer, at the close of business on Wednesday. Each NCRIC share was converted into 0.25 shares of ProAssurance stock.

CarrAmerica Realty agreed to sell 2,649,000 shares of its common stock to Goldman, Sachs & Co. The owner and developer of office properties said net proceeds of the offering before expenses will be about $99.6 million.

Jenner & Block recruited Larry P. Ellsworth, formerly assistant chief litigation counsel with the Securities and Exchange Commission's trial unit, as a partner in the law firm's Washington office.

Innovative Biosensors of College Park received a $100,000 grant from the National Heart, Lung and Blood Institute's Small Business Innovation Research program to develop a rapid test for prion, the agent that causes mad cow disease. The company said it could qualify for second-phase funding of as much as $750,000.