the band of appropriate proteins ( basic pancreatic trypsin inhibitor , soybean trypsin inhibitor , interleukin 2 , and human leukocyte interferon alpha a ) on a polyvinylidene difluoride ( pvdf ) membrane , which was electroblotted from sodium dodecyl sulfate ( sds ) -polyacrylamide gel and then stained with coomassie blue r-250 , was cut out and directly hydrolyzed in hcl in the presence of thioglycolic acid for amino acid analysis .
C0033684
proteins
C0003641
basic pancreatic trypsin inhibitor