Abstract
ENHANCEMENT of the reflexions corresponding to certain orders of the fundamental longitudinal periodicity of 198 A. in the X-ray diffraction photograph of keratin treated with heavy-metal salts has been reported by Fraser and Macrae1. They showed, for example, that mercury-treated Lincoln wool fibres gave enhanced seventh, twelfth, sixteenth and nineteenth orders, but they failed to observe any such effect in fibres treated with silver nitrate.
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References
Fraser, R. D. B., and Macrae, T. P., Nature, 179, 732 (1957).
Sikorski, J., and Simpson, W. S., Nature, 182, 1235 (1953).
Bear, R. S., and Rugo, H. J., Ann. N.Y. Acad. Sci., 53, 461 (1951).
MacArthur, I., Nature, 152, 38 (1943).
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SIMPSON, W., WOODS, H. Enhancement of the High-Spacing Meridional Reflexions in the X-ray Photograph of Keratin impregnated with Heavy-Metal Salts. Nature 185, 157 (1960). https://doi.org/10.1038/185157a0
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DOI: https://doi.org/10.1038/185157a0
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