PubMed:32118639 / 3733-3741
Annnotations
LitCovid-PAS-Enju
{"project":"LitCovid-PAS-Enju","denotations":[{"id":"EnjuParser_T632","span":{"begin":0,"end":8},"obj":"NN"}],"text":"immunity"}
LitCovid-TimeML
{"project":"LitCovid-TimeML","denotations":[{"id":"tok744","span":{"begin":0,"end":8},"obj":"NN"}],"text":"immunity"}