2010 worldwide in-market sales of Tysabri were $1.2B, +16% YoY (http://sec.gov/Archives/edgar/data/875045/000095012311007759/b84664exv99.htm ). Results of the iHub survey on this matter (from 1/13/10) can be found at http://investorshub.advfn.com/boards/board_survey_results.asp?board_id=1418&Survey_Num=129 .