Abstract
IN a recent communication1 details were given of a method for the quantitative estimation of radioactive isotopes in histological sections. A similar piece of apparatus was made by me some time ago for investigating the distribution of phosphorus-32 in sections of human enamel. In order to determine exactly what portion of the enamel was over the scanning hole, a low-voltage lamp and mirror were arranged inside the castle to throw a beam of light out through the hole. The mirror was mounted on a sliding rod, so that it could be pulled to one side of the counting tube. A microscope was arranged horizontally to view the scanning hole and the specimen ; the general arrangement is shown in the diagram.
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ATKINSON, H. Use of Geiger Counter for Quantitative Estimation of Phosphorus-32 in Histological Sections. Nature 164, 541 (1949). https://doi.org/10.1038/164541b0
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DOI: https://doi.org/10.1038/164541b0
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