PMC:7784787 / 4744-4881 JSONTXT

{"project":"LitCovid-PubTator","denotations":[{"id":"72","span":{"begin":32,"end":47},"obj":"Chemical"},{"id":"73","span":{"begin":79,"end":92},"obj":"Chemical"}],"attributes":[{"id":"A72","pred":"tao:has_database_id","subj":"72","obj":"MESH:D010577"},{"id":"A73","pred":"tao:has_database_id","subj":"73","obj":"MESH:D011126"}],"namespaces":[{"prefix":"Tax","uri":"https://www.ncbi.nlm.nih.gov/taxonomy/"},{"prefix":"MESH","uri":"https://id.nlm.nih.gov/mesh/"},{"prefix":"Gene","uri":"https://www.ncbi.nlm.nih.gov/gene/"},{"prefix":"CVCL","uri":"https://web.expasy.org/cellosaurus/CVCL_"}],"text":"d with an improved mask design, petroleum jelly [20], adhesive tape or fluffed polypropylene fibers [21]. For cloth masks, the only study"}