PMC:7796291 / 9976-10104 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T88","span":{"begin":0,"end":128},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The aerosol penetration after 3 min of challenged aerosol mass and the initial resistance were recorded as performance criteria."}