PubMed:19759529 / 1496-1504 JSONTXT

{"project":"LitCoin-GeneOrGeneProduct-v0","denotations":[{"id":"T38","span":{"begin":0,"end":8},"obj":"GeneOrGeneProduct"}],"text":"knockout"}

{"project":"LitCoin-GeneOrGeneProduct-v2","denotations":[{"id":"T23","span":{"begin":0,"end":8},"obj":"GeneOrGeneProduct"}],"text":"knockout"}