Connection Between Vitamin D & T-cell Function

Competent CD8+T-cells are the real Covid superstars

(https://www.sciencedirect.com/science/article/pii/S2590136220300231#)

… but many people cannot make them because they’re vitamin D deficient.

https://www.bmj.com/content/370/bmj.m3563/rr-6

https://blogs.scientificamerican.com/observations/another-reason-vitamin-d-is-important-it-gets-t-cells-going/