The epithelial and myoepithelial cells
were negatively immunostained by S100, and only the endothelial cells of vessels and blood were found to be immunoreactive.
Smooth muscle actin and myoepithelial cells
were not detected.
Intracystic papillary carcinomas of the breast: a reevaluation using a panel of myoepithelial cell
The expression of P-cadherin is restricted only to basal or lower layers of epithelia, including prostate and skin and also to breast myoepithelial cells
(MEC) proliferate in complex and mixed canine mammary gland tumors.
Similarly, CK5-positive cells likely represent undifferentiated adult stem cells with potential to differentiate into glandular or myoepithelial cells
(Boecker and Buerger 2003).
Uniform crowded epithelial cells with well-defined cytoplasm, singly scattered (myoepithelial cells
) plasmacytoid cells and clusters of darkly stained (ductal) cells are seen lying free or intermingled with fibrillary ground substance.
Transmission electron micrograph of section same as above showing electron dense secretory granules (SG) and myoepithelial cell
(MEC) during the development of the parotid gland.
(19) While circumscribed, the periphery of these tumors often lacks myoepithelial cells
and in the absence of definite invasive growth, solid papillary carcinoma is regarded as in situ carcinoma.
The importance of being a myoepithelial cell
Absence of myoepithelial cell
layer by immunohistochemical study is significant for pathologic diagnosis.
In addition, several cellular variants such as clear cell, pigmented, Langerhans cell containing bone and cementum forming, myoepithelial cell
and non-calcifying subtypes have been reported.