Abstract
GILLIES1 has recently described a method for examining insects labelled with sulphur-35 or phosphorus-32. The specimens were covered with two pieces of X-ray film, and autoradiographs made in the usual way. The low-energy sulphur β-particles (0.167 MeV.) were found to blacken only one film, while the high-energy phosphorus β-particles (1.71 MeV.) penetrated the first film and blackened the second also.
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References
Gillies, M. T., Nature, 182, 1683 (1958).
Whitehouse, W. J., and Putman, J. L., “Radioactive Isotopes”, 81, equation 15 (Oxford, 1953).
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DUNCOMBE, W. An Autoradiographic Method for distinguishing Samples labelled with Phosphorus-32 and Sulphur-35. Nature 183, 319 (1959). https://doi.org/10.1038/183319a0
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DOI: https://doi.org/10.1038/183319a0
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