* Health and Medical News:These stocks are insulated from the rising dollar

Biotechs and small caps are the top performers on Wall Street, with the health-care sector up about 8 percent for the week.



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via Health and Medical NewsHealth and Medical News Pfizer Inc has already had its takeover overtures rebuffed three times by rival AstraZeneca Plc, but investors in the U.S. drugmaker say it can tolerate a little more rejection before going hostile with the deal. AstraZeneca turned down a sweeten...

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