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April 27 (Reuters) - U.S. stocks ended down on Monday, led by losses in the healthcare sector and biotech shares after disappointing news from several companies including Amgen .
The Dow Jones industrial average fell 41.17 points, or 0.23 percent, to 18,038.97, the S&P 500 lost 8.75 points, or 0.41 percent, to 2,108.94 and the Nasdaq Composite dropped 31.84 points, or 0.63 percent, to 5,060.25.
Reporting By Sinead Carew; Editing by Nick Zieminski