TGFβ signaling in the brain increases with aging and signals to astrocytes and innate immune cells in the weeks after stroke.

Doyle KP, Cekanaviciute E, Mamer LE, Buckwalter MS. "TGFβ signaling in the brain increases with aging and signals to astrocytes and innate immune cells in the weeks after stroke." J Neuroinflammation. 2010;7:62.