Live feed06:45:00·1627dPRReleasevia QuantisnowMerck Announces Expiration of Hart-Scott-Rodino Act Waiting Period and Extension of Tender Offer to Acquire Acceleron Pharma Inc.ByQuantisnow·Wall Street's wire, on your screen.MRK· Merck & Company Inc.XLRN· Acceleron Pharma Inc.Health Care