Figure 2. SSTR affinity and immunohistochemistry studies.

A) Competitive binding of [¹²⁵I]-Somatostatin-28 to CH-57MN cells incubated at 37°C. IC₅₀ and maximum numbers of binding sites (B_max) were calculated using Origin 7.5 software. Data are from three independent experiments performed in triplicate (Mean ± SEM). B) Immunohistochemistry using SSTR2 antibody (original magnification, x20). Tumor obtained from the CH-157MN cell line.