CD68 and Lewy body dementia: Regional differences in glial activation have been reported in PD and DLB cases compared to controls, with some studies suggesting a higher activated microglial load, as measured by HLA-DR or CD68, in the amygdala [26], hippocampus [27, 28], transentorhinal cortex [27, 29], and temporal cortex [27, 30], whereas other studies did not describe an increase in the hippocampus [31] or neocortex [32].