Figure 4

Autoradiograms and images of H- and Ch2R-stained tumour sections. (a) A heterogeneous distribution of activity with higher intensities in areas corresponding to a more intense level of staining with H and Ch2R, 48 h (left) and 72 h (right). (b) Stained sections and autoradiograms of two tumours resected at 48 h from mice pre-dosed with 0.8 mg of cold 11B6 48 h prior to injection with ¹¹¹In-DTPA-11B6. (c) An autoradiogram and stained section of a submandibular gland at 48 h. This normal organ shows less heterogeneity in activity distribution and hematoxylin and Ch2R staining.