PMC:7736111 / 86225-86491 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T506","span":{"begin":0,"end":266},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"However, most studies showing exhausted T cells were confined to the peripheral blood, while lungs were mostly shown to have activated T cells but with concomitant expression of some exhaustive markers, suggesting that the activation state is followed by exhaustion."}