anion exchange , hydroxyapatite , lectin , and gel chromatography of conditioned medium of colo-16 cells result in separation into three distinct forms of hepatocyte-stimulating factors ( designated hsf-i , hsf-ii , and hsf-iii ) with apparent molecular weights of 30,000 , 50,000 and 70,000 , respectively .
C0003075
anion
C0021966
i