PMC:329117 / 26991-26993 JSONTXT

{"project":"craft-sa-dev","denotations":[{"id":"T7487","span":{"begin":0,"end":2},"obj":"NNS"}],"text":"Mb"}

{"project":"craft-ca-core-ex-dev","denotations":[{"id":"T7349","span":{"begin":1,"end":2},"obj":"CHEBI_SO_EXT:base"}],"text":"Mb"}