Figure 1.

Histological location of melanin pigment in each organ; brain (A), spinal cord (B), sciatic nerve (C), larynx (D), trachea (E), syrinx (F). Abbreviations: M, meninges; G, gray matter; W, white matter; GL, granular layer; ML, molecular layer; PR, perinurium; ER, endonurium; EPR, epinurium; E, epithelium; LP, lamina propria; MG, mucous gland; C, cartilage; SG, seromucous gland; ET, external tympanic membrane; IT, internal tympanic membrane; IC, intermediate syringeal cartilage; B, bony pessulus;, me, melanin pigment. Low magnification, H&E stain.