We chose to measure changes in the mRNA expression of interleukin-1β (IL-1β), tumor necrosis factor-α (TNF-α), Fas, interleukin-6 (IL-6), leukemia inhibitory factor (LIF), and interferon γ (IFN-γ) based on their potential involvement in neurodegenerative diseases. Here, LIF is linked to neurodegenerative disease.