Complex sentence: Bone morphogenetic protein 2 is shown to stimulate the production of bone, and recombinant human protein (rhBMP-2) is currently available for orthopaedic usage in the United States.
Split into simpler sentences: Bone morphogenetic protein 2 is shown to stimulate the production of bone. Recombinant human protein (rhBMP-2) is currently available for orthopaedic usage in the United States.