The biotechnology sector ended a bad week on a down note, asboth biotechnology stock indexes shed more that 4 points onFriday. The AMEX Biotechnology Stock Index closed the weekat 129.13, off 4.22 points for the day and down 14.88 since theprevious Friday. The Chicago Board Option Exchange BiotechIndex lost 14.94 points over the same period and 4.83 pointsfor the day, closing at 119.42.

Amgen Inc. (NASDAQ:AMGN) lost $8.88 a share since Feb. 12and closed last week at $45 a share, down $4.13.

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