1.   The key to the recent success is the family of molecules known as BMPs, for bone morphogenic proteins.

2.   The mutated growth occurs because key chemical signals, called bone morphogenetic proteins, or BMPs, are blocked during development.

3.   He is best known for his work on bone morphogenetic protein, or BMP.

4.   The Food and Drug Administration is evaluating other proteins, called bone morphogenetic proteins or BMPs, that have been shown to stimulate bone growth.