PMC:7796291 / 287-466 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T4","span":{"begin":5,"end":172},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"ies. As a respirator is front-line protection against particulate matter, including bioaerosol and droplets, a comprehensive understanding for the reuse strategy is needed. In thi"}