Bar Code Reader Baseline Change Request Battery Charge Regulator Bell Communications Research Benefit/Cost Ratio B cell receptors Bar Chart Report Battery Charge Regulators Battlefield Communications Review Binary Charge Regulator Block Coding Rate breakpoint cluster region Budget Change Report Budget Change Request Byte Count Register B cell Ag receptor B cell Ag receptors B cell antigen receptor B cell antigen receptor complex B cell antigen receptors B cell receptor B cell receptor complex B cell receptor for antigen B lymphocyte antigen receptor Band Council Resolution Baseband Combiner Radio Battle Command Reengineering Bay Coast Railroad BC Rockies Tourism B-cell reactivity