Mr. Weissmann is a federal prosecutor in Brooklyn who once specialized in taking on the mob.

Edwin Roman once specialized in cutting classes and hanging out with the other members of the Latin Kings gang.

Several of us had gone to one of those little out-of-the-way theaters that had once specialized in "Ecstasy."

Chinese auction houses that once specialized in traditional ink paintings are now putting contemporary experimental artworks on the block.

It was once specialized for beer, but now is devoted to diet soda and grains from Walnut Acres.

The company once specialized in transporting wood products from local woodyards but now is mainly in the car storage business.

Often, no images from a movie are available that early, so agencies that once specialized in clipping and splicing are stretching their creative abilities.

The company once specialized in transporting wood and paper products to and from local factories.

The group once specialized in hard-core punk, which it played with competence, if not much inspiration.

Vector once specialized in turning viruses into weapons.