PMC:7796291 / 13757-14014 JSONTXT

{"project":"LitCovid-PubTator","denotations":[{"id":"153","span":{"begin":154,"end":158},"obj":"Chemical"},{"id":"154","span":{"begin":171,"end":183},"obj":"Chemical"},{"id":"155","span":{"begin":225,"end":229},"obj":"Chemical"},{"id":"156","span":{"begin":234,"end":242},"obj":"Chemical"},{"id":"157","span":{"begin":243,"end":246},"obj":"Chemical"}],"attributes":[{"id":"A153","pred":"tao:has_database_id","subj":"153","obj":"MESH:D012965"},{"id":"A154","pred":"tao:has_database_id","subj":"154","obj":"MESH:C015418"},{"id":"A155","pred":"tao:has_database_id","subj":"155","obj":"MESH:D012965"},{"id":"A156","pred":"tao:has_database_id","subj":"156","obj":"MESH:D010232"},{"id":"A157","pred":"tao:has_database_id","subj":"157","obj":"MESH:D009821"}],"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":"e filtration efficiency was measured after challenging the respective aerosols for 3 min (by the KF standard) [35], which corresponded to about 2.7 mg of NaCl and 8 mg of paraffin oil mass. The filtration performance against NaCl and paraffin oil aerosols w"}