Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

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.

View full-text article in PMC

. 2022 Mar 10;23(6):2977. doi: 10.3390/ijms23062977

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

PMC Copyright notice

Analysis of serum IgG antibodies against SARS-CoV-2 S and N proteins in healthcare workers with COVID-19 and pre-COVID-19 samples determined by ELISA assay. Cutoff values to determine positive (above), and negative (below dashed line) samples is indicated. Dots and squares represent anti-SARS-CoV-2 S and N protein IgGs, respectively, from healthcare workers affected by COVID-19 (a) or pre-pandemic samples (b). Means (red lines) and significant P values (***, p < 0.001 Mann Whitney test) are indicated.