PMC:549712 / 58687-58690 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T17041","span":{"begin":0,"end":3},"obj":"NN"}],"text":"CO2"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T16808","span":{"begin":0,"end":3},"obj":"CHEBI:16526"}],"text":"CO2"}

{"project":"craft-ca-core-dev","denotations":[{"id":"T16755","span":{"begin":0,"end":3},"obj":"CHEBI:16526"}],"text":"CO2"}