Radioligand assays and Scatchard analysis revealed a single class of high affinity IGF-IR binding sites with a similar dissociation constant (Kd: 0.32 +/- 0.1 nmol/l vs 0.22 +/- 0.08 nmol/l) for both normal adrenomedullary cells and pheochromocytomas.
C0086168
Dissociation