Erratum to: Progressive changes of orexin system in a rat model of 6-hydroxydopamine-induced Parkinson’s disease

Immunohistochemical staining of orexin-A-containing fibers in TN of control (A, C) and PD (B, D) rats at day 49 post operation. A, B: dorsal tuberomammillary nucleus; C, D: ventral tuberomammillary nucleus. Scale bar, 50 μm