Immunomodulating

See also "Immunomodulators"
We have endogenous immunomodulators:

Articles/Studies
The Cholinergic Anti-inflammatory Pathway: A Missing Link in Neuroimmunomodulation
The Immunomodulatory Effects of Sunlight
The lanostane triterpenoids in Poria cocos play beneficial roles in immunoregulatory activity.
Cellular and molecular mechanisms of immunomodulation in the brain through environmental enrichment