Tysabri vs Copaxone simple survey: Q: Which of these two drugs will have larger worldwide sales in the three-year period from 2007-2009? To vote, go to <A HREF="http://www.investorshub.com/boards/board_surveymenu.asp?board_id=1418" target="_blank">http://www.investorshub.com/boards/board_surveymenu.asp?board_id=1418</A> and select survey #47.