PMC:7784787 / 14285-14448 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T124","span":{"begin":0,"end":163},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Even the worst performing single-layer mask served to slow down the flow from the mouth, which would reduce the spread of particles even if they were not captured."}