PMC:340383 / 21898-21901 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T5400","span":{"begin":0,"end":3},"obj":"NN"}],"text":"CO2"}

{"project":"craft-ca-core-dev","denotations":[{"id":"T5188","span":{"begin":0,"end":3},"obj":"CHEBI:16526"}],"text":"CO2"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T5230","span":{"begin":0,"end":3},"obj":"CHEBI:16526"}],"text":"CO2"}