Following its acquisition of NUVO in a reverse merger, ARCA Biopharma begins trading today on Nasdaq under the ticker symbol ABIO: <a href="http://finance.yahoo.com/news/ARCA-biopharma-and-Nuvelo-bw-14174041.html" target="_blank">http://finance.yahoo.com/news/ARCA-biopharma-and-Nuvelo-bw-14174041.html</a>