Unilife Corp. (UNIS US): The medical-device maker was rated a new "buy" at Jefferies Group Inc. with a price estimate of $7.Read more: http://www.sfgate.com/cgi-bin/article.cgi?f=/g/a/2012/01/04/bloomberg_articlesLXA1AD6S972A.DTL#ixzz1iWujMD4F