So, if a healthy psychological immune system is a marker of well-being, then perhaps a lack of natural coping abilities signals poor mental health.

The CD4 + test directly measures the abundance of the helper t cell, an of immune cell in the bloodstream distinguishable because they are the only ones that carry the CD4 marker.

Playing an important role in atherosclerosis and many other immune diseases, CSF-1 can be identified as a potential marker for inflammation and disease.