when peak 1 material was added to igf-i the bioeffects ( glucose and aib uptake ) of igf and binding proteins were additive , and in some experiments the binding proteins potentiated the effect of igf on endothelial cells , suggesting that the binding protein-igf complex may retain the bioactivity of both the binding protein ( s ) and the igf .
C0021665
igf-i
C0037657
igf