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PMC:7435837 / 27051-27247 JSONTXT

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LitCovid-PD-CLO

Id Subject Object Predicate Lexical cue
T267 160-161 http://purl.obolibrary.org/obo/CLO_0001020 denotes a

LitCovid-sentences

Id Subject Object Predicate Lexical cue
T207 0-196 Sentence denotes 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.