PMC:7594251 / 244-320
Annnotations
LitCovid-PD-CLO
{"project":"LitCovid-PD-CLO","denotations":[{"id":"T97528","span":{"begin":12,"end":13},"obj":"http://purl.obolibrary.org/obo/CLO_0001020"}],"text":"s are still a major challenge because pathogens rapidly and continually evol"}