** UDG Healthcare rises c.8 pct, one of the top gainers onthe FTSE 250 index in decent volume after announcingsale of pharma distribution unit
** Dublin-based firm to sell United Drug Supply Chainbusiness and MASTA business to McKesson, for 408 mlneuros
** Co told Reuters in May that it was seeking acquisitionsto expand its contract outsourcing and healthcare communicationsbusiness
** Shares in UDG, which has a market value of about 1.2 blnstg, have gained more than 37 pct YTD (RM: aastha.agnihotri.thomsonreuters.com@reuters.net)