The composition and reactivity of medullated keratins

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Abstract
The P content of a number of medullated and non-medullated keratins, and of the isolated medulla of keratins, was measured. None contains more than traces of P. The combined cystine of a medullated keratin (kemp) or a normal wool is stable to the alkali employed in scouring. Two-dimensional partition chromatography indicates that the medulla of wool and porcupine quill differs greatly from the cortex in amino-acid composition.