Does the body have any use for D-amino acid ?
Recent evidence has shown that d-amino acids are present in animals and humans in high concentrations and fulfill specific biological functions. In the central nervous system, two d-amino acids, d-serine and d-aspartate, occur in considerable concentrations.
https://www.ncbi.nlm.nih.gov/pubmed/15979028
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Recently I read the highest concentration is in the brain ?