PMC:7299399 / 75553-75655 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T298","span":{"begin":0,"end":102},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Impaction is the primary mechanism responsible for removing particles greater than 500 nm in diameter."}