four human insulins and four porcine insulins , each monoiodinated to the same specific activity at one of the four tyrosine residues ( a14 , a19 , b16 , b26 ) and purified by reversed-phase liquid chromatography , were tested in a radiobinding assay against a panel of insulin-antibody ( ia ) -positive sera from 10 insulin-treated diabetics and insulin-autoantibody-positive ( iaa ) sera from 10 nondiabetics .
C0795635
human insulins
C0021641
insulin