PMC:7796291 / 1614-1781 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T13","span":{"begin":0,"end":167},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"The demand for face filtering respirators has grown continuously to cope with various environmental hazards including fine dust, liquid mist, bioaerosol, and droplets."}