PubMed:21325775 / 1189-1199 JSONTXT

{"project":"LitCoin-GeneOrGeneProduct-v0","denotations":[{"id":"T36","span":{"begin":0,"end":10},"obj":"GeneOrGeneProduct"}],"text":"amino acid"}

{"project":"LitCoin-GeneOrGeneProduct-v2","denotations":[{"id":"T21","span":{"begin":0,"end":10},"obj":"GeneOrGeneProduct"}],"text":"amino acid"}