Androgen deprivation produces profound involution of the prostate, particularly of the epithelial component, but little or no change in the external genitalia.

TYRP-1 staining was confined to the cytoplasm and to the epithelial components of the tissue.

Carcinosarcomas comprise both malignant epithelial and malignant sarcomatous components.

The term, thymoma, is customarily used to describe neoplasms that show no overt atypia of the epithelial component.

Thymoma is a thymic epithelial tumor in which the epithelial component exhibits no overt atypia and retains histologic features specific to the normal thymus.

On histology, the tumors consist of adenocarcinoma (endometrioid, serous or clear cell) mixed with the malignant mesenchymal (sarcoma) elements; alternatively, the tumor may contain two distinct and separate epithelial and mesenchymal components.

Metastases usually contain only epithelial components.

The mechanism of differentiation of the cementoblasts is controversial but circumstantial evidence suggests that an epithelium or epithelial component may cause dental follicle cells to differentiate into cementoblasts, characterised by an increase in length.

The epithelial components of the stem cells for continuously growing teeth form from tissue layers called the stellate reticulum and the suprabasal layer of the surface ectoderm.

Intra-bony cysts are most common in the jaws, because the mandible and maxilla are the only bones with epithelial components.