Chromatophores in the leptomeninges of the medulla oblongata of the Negro.
D001099:Arachnoid / Q000166:cytology*; D044383:Black People; D002856:Chromatophores; D006801:Humans; D008526:Medulla Oblongata; D010841:Pia Mater / Q000166:cytology*; D013194:Staining and Labeling