Also. . .

* Unilab Corp., based in Tarzana, said it had filed with the Securities and Exchange Commission for an initial public offering of common stock. Unilab is an independent provider of clinical laboratory testing services, with its main testing facilities in Los Angeles, San Jose and Sacramento and 350 satellite facilities throughout the state. The company said it plans to seek a listing on the New York Stock Exchange under the ticker symbol ULB. Salomon Smith Barney Inc. and Credit Suisse First Boston Corp. are handling the IPO.