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50 mg tramadol vs 10 mg hydrocodone Colin Blakemore, professor of neuroscience and philosophy at the School of Advanced Study in London and former chief executive of the Medical Research Council, said: "The death of a great person usually provokes hyperbole, but it is impossible to exaggerate the impact of Fred Sanger's work on modern biomedical science. His invention of the two critical technical advances ??? for sequencing proteins and nucleic acids ??? opened up the fields of molecular biology, genetics and genomics. He remains the only person to have won two Nobel prizes in chemistry ??? recognising his unique contribution to the modern world."