. 2023 Jul 1;11(7):1878. doi: 10.3390/biomedicines11071878
© 2023 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 2.
Immune checkpoints and tumor microenvironment.