PMC:7784787 / 213-416 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T6","span":{"begin":111,"end":131},"obj":"Sentence"},{"id":"T7","span":{"begin":132,"end":199},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"easuring mask performance which can simultaneously assess both fabric penetration and leakage due to poor fit. Materials \u0026 methods: A synthetic aerosol is introduced into the lung of a medical dummy. A c"}