PMC:7736111 / 152801-152928 JSONTXT

{"project":"LitCovid-sentences","denotations":[{"id":"T1053","span":{"begin":0,"end":127},"obj":"Sentence"}],"namespaces":[{"prefix":"_base","uri":"http://pubannotation.org/ontology/tao.owl#"}],"text":"Thus, a more comprehensive understanding of the immunopathological changes and sustainability of protective immunity is needed."}