CD68 and Parkinson disease: In the pyramidal layer of the HC of control subjects, iLBD cases and PD patients, CD68 positive, ramified microglia were present (shown for CA2 Figure 3d-f), but CD68 positive amoeboid microglia were clearly more present in PD patients (Figure 3f) compared to control and iLBD cases (Figure 3d, e), especially in the CA2 and CA3 region (shown for CA2 Figure 5d; PD vs Ctr/iLBD p = 0.007; Ctr Mean = 13 ± 2.9; iLBD Mean = 12.1 ± 2.5; PD Mean = 37.2 ± 7.2).