PMC:7212949 / 718-737 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T413","span":{"begin":3,"end":7},"obj":"PR:000001393"},{"id":"T414","span":{"begin":12,"end":17},"obj":"PR:000001471"}],"text":" over time, SARS-Co"}