“All the more recent work on alkaptonuria has... strengthened the belief that the homogentisic acid excreted is derived from tyrosin, but why alkaptonuric individuals pass the benzene ring of their tyrosin unbroken and how and where the peculiar chemical change from tyrosin to homogentisic acid is brought about, remain unsolved problems.”
Quote by Archibald Garrod
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Source: Some Considerations Touching the Usefulnesse of Experimental Naturall Philosophy, ... by the Honorable Robert Boyle Esq; ...
“Molecular biology is essentially the practice of biochemistry without a license.”
