. 2021 Dec 6;9(12):1843. doi: 10.3390/biomedicines9121843
© 2021 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/).
Figure 3.
Mechanism of vitamin D in combating COVID-19.