Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Immune cross-reactivity of convalescent patient serums with SARS collected from 15 years post-infection against the SARS-CoV-2 spike protein. (A) Heatmap of antibody titres. (B) Histogram of antibody titres expressed in terms of mean and 95% confidence interval (CI). (C) Histogram of OD450 in the ACE2 competition assay in terms of mean and 95% CI. (D) Heatmap of OD450 in the ACE2 competition assay. ****P < 0.0001. ns, no significant difference.
