Figure 6. Erythrocytes of Parkinson's disease patients prepared from whole blood smears. Serum ferritin levels: (A) 80 ng.mL‐1 (B) 194 ng.mL‐1 (C) 90 ng.mL‐1 (D) 90 ng.mL−1 (E) 145 ng.mL‐1 (F) 358 ng.mL‐1 (G) 145 ng.mL‐1 (H) 21 ng.mL−1 Scale bar = 1μm.