548340.fig.004a
(a)
548340.fig.004b
(b)
Figure 4: (a) Hematoxylin and Eosin stain (x100 magnification) section showing histology of a dermoid cyst. The cyst is filled with keratinous material in the lumen and is lined by stratified squamous epithelium that is responsible for the synthesis of luminal keratin. The tissue underlying the squamous lining comprises pilosebaceous units (b).