 191 citations
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  November 1959   in “Annals of the New York Academy of Sciences”
           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.  
               34 citations
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  July 1958   in “Biochimica et Biophysica Acta”                  25 citations
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  January 1958   in “Elsevier eBooks”