PMC:7143707 / 7593-7802 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T79","span":{"begin":109,"end":112},"obj":"http://purl.obolibrary.org/obo/CLO_0008724"},{"id":"T80","span":{"begin":138,"end":139},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":" out 99.99% of particles (P= particles; 100=essentially 100% efficiency). Higher levels of protection (i.e., R95, P100) are acceptable if a situation calls for N95 and an N95 is not available, but lower levels"}