R Yirmiya, Weidenfeld, J, Barak, O , Avitsur, R , and Y research, Pollak -Brain. 1999. “The Role Of Brain Cytokines In Mediating The Behavioral And Neuroendocrine Effects Of Intracerebral Mycoplasma Fermentans”. https://www.sciencedirect.com/science/article/pii/S0006899399012743.