PubMed:7468724 / 238-242 JSONTXT

{"project":"LitCoin-GeneOrGeneProduct-v0","denotations":[{"id":"T1","span":{"begin":0,"end":4},"obj":"GeneOrGeneProduct"}],"text":"twin"}

{"project":"LitCoin-GeneOrGeneProduct-v2","denotations":[{"id":"T1","span":{"begin":0,"end":4},"obj":"GeneOrGeneProduct"}],"text":"twin"}