Savina M V, Egoiants M A, Koroleva E M, Ivanova T I
Zh Evol Biokhim Fiziol. 1990 May-Jun;26(3):421-4.
Free amino acids in the blood plasma of lampreys, frogs and rats were determined by HPLC. In spite of quantitative differences in the total pool of free amino acids, the specific content of physiologically important amino acids is quite similar in representatives of different classes of vertebrates, from cyclostomes to mammals.