extracts from an acetone powder preparation of a culture of a microorganism tentatively named progenitor cryptocides contain choriogonadotropin ( cg ) -like factor as determined by radioimmunoassay with antiserum to human ( h ) cg beta subunit cooh-terminal peptide and radioreceptor assay with bovine corpus luteum membranes .
C0018062
choriogonadotropin
C0106132
cg beta