PMC:7324763 / 33243-33257 JSONTXT

{"project":"LitCovid-PMC-OGER-BB","denotations":[{"id":"T689","span":{"begin":0,"end":14},"obj":"CL:0000623"},{"id":"T53807","span":{"begin":0,"end":14},"obj":"CL:0000623"}],"text":"Natural Killer"}