FIGURE 1. Autoradiography experiments on lymphomas. (Top) Binding of [125I-Tyr3]octreotide, represented by black spots, to rat brain (A), GH-producing tumor (B), both used as positive controls, and example of 1 lymphoma studied (C), lymphoma no. 6. (Bottom) Binding of [125I-Tyr3]octreotide is displaced by excess unlabeled octreotide.