the biosynthesized proopiomelanocortin ( pomc ) , beta-lipotropin ( beta-lph ) , and beta-endorphin ( beta-ep ) were purified by immunoprecipitation with an antiserum to beta-ep and analyzed by sodium dodecyl sulfate polyacrylamide disc gel electrophoresis .
C0033195
proopiomelanocortin
C0023832
beta-lipotropin