the purified sm has an approximate molecular weight of 7500 , pi 8.6 , 4000 sm bioactivity units per milligram ( as measured by a hypophysectomized rat bioassay ) and a parallel approximately equipotent radioimmunoassay dose -- response curve to sm-c and insulin-like growth factor-1 ( igf-i ) .
C0037657
sm
C0021665
insulin-like growth factor-1