PMC:1540739 / 449-459 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T520","span":{"begin":1,"end":9},"obj":"NNP"}],"text":" Exchange "}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T421","span":{"begin":1,"end":9},"obj":"SO_EXT:sequence_substitution_process"}],"text":" Exchange "}