PMC:7166305 / 1988-1996 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T27","span":{"begin":1,"end":8},"obj":"GO:0009986"},{"id":"T36797","span":{"begin":1,"end":8},"obj":"GO:0009986"}],"text":" surface"}