PMC:7148425 / 1739-1858 JSONTXT

{"project":"LitCovid-PD-CLO","denotations":[{"id":"T10","span":{"begin":63,"end":64},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"Obviously, there is vigorous debate as to why this may be, but a common denominator is the waning of immunity with age."}

{"project":"LitCovid-sentences","denotations":[{"id":"T11","span":{"begin":0,"end":119},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Obviously, there is vigorous debate as to why this may be, but a common denominator is the waning of immunity with age."}