PMC:1420271 / 19157-19161 JSONTXT

{"project":"craft-ca-core-dev","denotations":[{"id":"T10376","span":{"begin":0,"end":4},"obj":"CHEBI:16199"}],"text":"urea"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T10408","span":{"begin":0,"end":4},"obj":"CHEBI:16199"}],"text":"urea"}

{"project":"craft-sa-dev","denotations":[{"id":"T10563","span":{"begin":0,"end":4},"obj":"NN"}],"text":"urea"}