Persistence of serum and saliva antibody responses to SARS-CoV-2 spike antigens in COVID-19 patients.
Sci Immunol. 2020 Oct 8;5(52):eabe5511. doi: 10.1126/sciimmunol.abe5511.
Sci Immunol. 2020.
PMID: 33033173
Free PMC article.