PMC:7170415 / 585-761 JSONTXT

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{"project":"LitCovid-PD-CLO","denotations":[{"id":"T13","span":{"begin":108,"end":109},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"ific groups of persons. Real-time reverse transcriptase polymerase chain reaction–based assays performed in a laboratory on respiratory specimens are the reference standard for"}

{"project":"LitCovid-PD-GO-BP","denotations":[{"id":"T1","span":{"begin":42,"end":55},"obj":"http://purl.obolibrary.org/obo/GO_0003968"},{"id":"T2","span":{"begin":42,"end":55},"obj":"http://purl.obolibrary.org/obo/GO_0003899"}],"text":"ific groups of persons. Real-time reverse transcriptase polymerase chain reaction–based assays performed in a laboratory on respiratory specimens are the reference standard for"}