#autoradiography

• Histoautoradiography — A highly precise histological method that allows the exact microscopic localization of radioactive substances previously introduced into an organism, tissue, or cell culture, by applying a thin layer of photographic emulsion directly over the examined biological section. The resulting image (autohistoradiogram) reveals the intimate distribution of labeled compounds, providing crucial insights into cellular metabolism, nucleic acid synthesis, and macromolecular dynamics within intact tissue structures.
• Autoradiography — A biophysical method of investigation and structural imaging consisting of detecting and recording the spatial distribution of radioactive substances or isotope-labeled molecules (tracers), by directly exposing the biological or metallurgical sample onto a photographic emulsion or a digital sensor. This experimental process utilizes the self-emission of radiation (alpha, beta, or gamma) from the sample to expose the contact medium, serving as a fundamental technique in nucleic acid mapping, cellular metabolism studies, and protein localization.