Autoradiography: its methodology at the present time
Article first published online: 2 AUG 2011
1982 Blackwell Science Ltd
Journal of Microscopy
Volume 128, Issue 1, pages 79–94, October 1982
How to Cite
Williams, M. A. (1982), Autoradiography: its methodology at the present time. Journal of Microscopy, 128: 79–94. doi: 10.1111/j.1365-2818.1982.tb00439.x
- Issue published online: 2 AUG 2011
- Article first published online: 2 AUG 2011
- Revised paper accepted 1 April 1982
- image analysis;
- silver grain
The autoradiographic methods used in biological and medical research are reviewed from an historical viewpoint. It is pointed out that early methodological research was directed at the selection of suitable detector substances for radiation (nuclear emulsions) and at the preparation and application of suitable layers of these detectors to biological samples. On the other hand, later research was more concentrated on aspects of the preparation of the biological components of the specimens. In particular, the retention of biochemicals in the tissue sample was studied in detail. Research in the quantification of the emulsion response to α and β radiation paved the way for certain quantitative applications of autoradiography. This has been followed by the derivation of models for the measurement of image spread and the evolution of image analysis methods which allow refined determinations of the specific radioactivity of fine structures taking into account losses and gains of silver grains by image spread.
The sum of all these advances is a methodology capable of localizing and quantifying radioactivity and hence marking chemical processes from an organism and organ level down almost to the present limits of anatomical delineation.