““It is one of the striking generalizations of biochemistry—which surprisingly is hardly ever mentioned in the biochemical text-books—that the twenty amino acids and the four bases, are, with minor reservations, the same throughout Nature. As far as I am aware the presently accepted set of twenty amino acids was first drawn up by Watson and myself in the summer of 1953 in response to a letter of Gamow 's.””
![“Casein [the main protein found in dairy], in fact, is…” quote by T. Colin Campbell](https://sms4smile.com/quotes/img-quotes/67f/t-colin-campbell-5387_animal_casein-the-main-protein-found-in-dairy-i_291857.jpg)
