May 23, 2005 07:30 ET Rates the Following Stocks for Monday, May 23, 2005: AMGN, GENZ, SYK, and YHOO

NOTE TO EDITORS: The Following Is an Investment Opinion Being Issued by

ATLANTA, GA -- (MARKET WIRE) -- May 23, 2005 -- has a long-term buy rating on Amgen, Inc. (NASDAQ: AMGN) and a short-term buy rating on Genzyme Corp. (NASDAQ: GENZ), Stryker Corp. (NYSE: SYK), and Yahoo! Inc. (NASDAQ: YHOO).

Amgen, Inc. is a global biotechnology company that discovers, develops, manufactures, and markets human therapeutics based on advances in cellular and molecular biology.

Genzyme Corp. is a global biotechnology company that operates in five segments: renal, therapeutics, transplant, biosurgery, and diagnostics/genetics.

Stryker Corp. manufactures and markets medical devices primarily to the orthopedic market.

Yahoo! Inc. together with its consolidated subsidiaries, is a global Internet brand.

On Friday, May 20, 2005 the stocks closed as follows:

AMGN $61.87 up 0.08%
GENZ $63.84 down 0.25%
SYK $48.39 up 0.33%
YHOO $36.33 down 1.14%.
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