PMC:7212949 / 2468-2477 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T43","span":{"begin":3,"end":9},"obj":"UBERON:0000467"},{"id":"T92807","span":{"begin":3,"end":9},"obj":"UBERON:0000467"}],"text":"an system"}