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  • Title: [Free amino acid content in the blood plasma of cosmonauts before and after a 175-day flight on Saliut-6].
    Author: Popov IG, Latskevich AA.
    Journal: Kosm Biol Aviakosm Med; 1984; 18(2):26-33. PubMed ID: 6716939.
    Abstract:
    Measurements of 17 free amino acids were performed before and after the Salyut-6 175-day space flight. At R + 1 both crewmembers showed a reduced concentration of most amino acids as compared to the preflight level. By R + 7 the preflight status was not yet reached. It is recommended to enrich the space diet with the following essential amino acids: preflight--methionine, leucine, isoleucine, phenylalanine, lysine, threonine, cystine, and tyrosine; postflight--lysine, threonine, valine, leucine, isoleucine, phenylalanine, methionine, and cystine.
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