PMC:7796291 / 284-472 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T4","span":{"begin":8,"end":175},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"pplies. As a respirator is front-line protection against particulate matter, including bioaerosol and droplets, a comprehensive understanding for the reuse strategy is needed. In this stud"}