PMC:7199903 / 6836-6855 JSONTXT

{"project":"LitCovid-sample-Enju","denotations":[{"id":"T1135","span":{"begin":3,"end":11},"obj":"NNS"},{"id":"T1136","span":{"begin":12,"end":14},"obj":"IN"},{"id":"T1137","span":{"begin":15,"end":19},"obj":"DT"}],"text":"ng features at each"}