antibodies to proinsulin bound linear c-peptide with lower affinity ( 0.3 +/- 0.2 x 10 ( 9 ) l/mol ) than the c-peptide loop in proinsulin ( 3.4 +/- 0.9 x 10 ( 9 ) l/mol ) .
C0033362
proinsulin
C0006558
c-peptide