PMC:7435837 / 27051-27247 JSONTXT

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    LitCovid-PD-CLO

    {"project":"LitCovid-PD-CLO","denotations":[{"id":"T267","span":{"begin":160,"end":161},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"FFP2 and FFP3/N95 masks offer significant protection against airborne particles and even then the FFP3 masks filter at least 99% of airborne particles, leaving a gap for some particle penetration."}

    LitCovid-sentences

    {"project":"LitCovid-sentences","denotations":[{"id":"T207","span":{"begin":0,"end":196},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"FFP2 and FFP3/N95 masks offer significant protection against airborne particles and even then the FFP3 masks filter at least 99% of airborne particles, leaving a gap for some particle penetration."}