using specific homologous radioimmunoassays ( ria ) in combination with reversed-phase high performance liquid chromatography and gel permeation chromatography under denaturing conditions , we have recognized major components which coeluted with human calcitonin- ( 1-32 ) , pdn-21 , a carboxyl-terminal flanking peptide derived from the calcitonin mrna sequence , and salmon calcitonin- ( 1-32 ) .
C0006668
calcitonin
C0073994
salmon calcitonin