61 citations
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April 1980 in “Journal of the American Academy of Dermatology” 59 citations
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July 1972 in “Biochemistry” Transamidases help form strong crosslinks in hair proteins, crucial for hair strength.
125 citations
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February 1971 in “Biochemistry” 84 citations
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June 1970 in “Journal of Investigative Dermatology”
75 citations
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November 1965 in “Textile research journal” Papain and bisulfite break down human hair by dissolving parts of it.
46 citations
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November 1963 in “Journal of Histochemistry & Cytochemistry”
191 citations
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November 1959 in “Annals of the New York Academy of Sciences” Hair and wool have complex microscopic structures with microfibrils and varying cystine content.
88 citations
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July 1958 in “Nature”