General introduction -- ch. 1. Radioligands and their preparation -- ch. 2. Frozen tissue preparation -- ch. 3. Radioligand binding on frozen tissue sections -- ch. 4. Light microscopic autoradiography -- ch. 5. Counterstaining -- ch. 6. Double labeling -- ch. 7. Analysis of light microscopic autoradiograms -- ch. 8. Biochemical assay of receptors -- ch. 9. Electron microscopy -- ch. 10. Typical protocols -- Examples of observations -- Glossary -- Index.