PMC:7146662 / 4871-4973 JSONTXT

{"project":"LitCovid-PubTator","denotations":[{"id":"55","span":{"begin":89,"end":97},"obj":"Chemical"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":" filters and placed under the drape to provide further air filtration.\nFigure 4 Two heat moisture exch"}