PMC:1140370 / 1-12 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T143","span":{"begin":3,"end":10},"obj":"NN"}],"text":"NA binding "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T84","span":{"begin":3,"end":10},"obj":"CHEMINF_GO_EXT:chemical_binding_or_bond_formation"}],"text":"NA binding "}