The concentrations in plasma and erythrocytes of free amino acids before, during and after cardiopulmonary by-pass have been determined. During by-pass and the early postoperative period the total alpha-amino nitrogen decreased, mainly because of changes in glucogenic amino acids; ketogenic amino acids, on the other hand, increased. The phenylalanine/tyrosine ratio was markedly increased in all cases.

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http://dx.doi.org/10.1016/0300-9572(75)90072-6DOI Listing

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