CAMBRIDGE, Mass.--(BUSINESS WIRE)--Acceleron Pharma, Inc., a biopharmaceutical company developing novel therapeutics that modulate the growth of tissues including bone and muscle, today announced that ACE-011 improved bone microarchitecture, increased bone mineral density and bone mechanical strength. The results from the oral presentation titled “ACE-011, A Soluble Activin Receptor Type IIA Fusion Protein, Increases BMD and Improves Microarchitecture in Cynomolgus Monkeys” were presented at The American Society for Bone and Mineral Research (ASBMR) 29th Annual Meeting held in Honolulu, Hawaii, USA, September 16 – 19, 2007.