glutathion examine.com Glutathione is critical for NK cell-mediated immunity: Cell Reports Vitamin C and glutathione supplementation:

ChovanovaZMuchovaJSivonovaMDvorakovaMZitnanovaIWaczulikovaIet alEffect of polyphenolic extract, Pycnogenol, on the level of 8-oxoguanine in children suffering from attention deficit/hyperactivity disorder

Kim et al., 2012

L-Serine itself can act as a feedback inhibitor of PHGDH in certain organisms, ensuring that excess serine slows its own production [21]

Beyond its familiar role in bone and dental health, calcium is essential for muscle contraction, nerve transmission, and blood clotting

Studies of the proteins in human plasma very low density lipoproteins

In addition, a synthetic lethal relationship exists between the oncogenic activity of IDH2 and the serine synthesis pathway in both TNBC and HER2-positive breast cancer, rendering cells with high IDH2 expression particularly sensitive to PHGDH or PSAT1 inhibition (71)