Abstract
IN a recent communication, Capindale and Tomlin1 have pointed out some of the difficulties in measuring accurately the abundance of isotopic nitrogen (nitrogen-15), a measurement which is generally required when this isotope is used as a tracer in biological experiments.
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References
Capindale, J. B., and Tomlin, D. H., Nature, 180, 701 (1957).
Yemm, E. W., and Willis, A. J., New Phytol., 55, 229 (1956).
Cocking, E. C., Ph.D. thesis, University of Bristol (1956).
Fleury, P., C.R. Acad. Sci., Paris, 171, 957 (1920).
Sprinson, D. B., and Rittenberg, D., J. Biol. Chem., 180, 707 (1949).
Rittenberg, D., “Preparation and Measurement of Isotopic Tracers” (Edwards, Ann Harbor, Michigan, 1946).
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SIMS, A., COCKING, E. Assay of Isotopic Nitrogen by Mass-Spectrometer. Nature 181, 474 (1958). https://doi.org/10.1038/181474a0
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DOI: https://doi.org/10.1038/181474a0
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