title: The tylotrich (hair) follicle of the American opossum.
mesh_terms: D000818:Animals; D005075:Biological Evolution; D005260:Female; D006197:Hair / Q000166:cytology*; D006652:Histological Techniques; D008854:Microscopy, Electron; D009411:Nerve Endings; D009474:Neurons; D009893:Opossums; D010860:Pigments, Biological; D012867:Skin / Q000166:cytology
chemical_list: D010860:Pigments, Biological