Although available microscopic data identify the dividing cells in the holothurian gut as specialized cells (enterocytes in the luminal epithelium and peritoneal and myoepithelial
cells in the mesothelium), it is currently unknown whether all differentiated epithelial cells are capable of entering the cell cycle or whether those cells that can proliferate are all equal in their potential.
Expression of class II beta tubulin by proliferative myoepithelial
cells in canine mammary mixed tumors.
Various breast cancer phenotypes have been defined based on molecular pathology, including the myoepithelial
basal-like carcinoma of the breast that is characterized as ER-negative and HER2-negative with increased expression of GK5 and p63 (Fadare and Tavassoli 2007; Yehiely et al.
Pleomorphic adenoma and MASC contain bland cells and vacuolated cells but we did not observe typical chondromyxoid stroma and fibrillary extracellular matrix admixed with spindle myoepithelial
cells, as seen in pleomorphic adenoma.
cells were located at the base of the acinar cell and were stellate shaped.
Moderate proliferation of the fibrous connective tissue and the myoepithelial
cells was observed among the proliferated acini.
Microphotograph of FNAC smears of pleomorphic adenoma shows clusters of epithelial cells and spindie myoepithelial
cells embedded within pinkish stromal substance (MGG x400)
The final impression of HPE was myoepithelial
carcinoma of breast with no axillary lymph node metastasis.
Histopathology indicated the level IIA mass to be an encapsulated classic pleomorphic adenoma with a predominant myoepithelial
component, surrounded by clusters of normal salivary gland tissue embedded in fatty tissue (Figure 3).
Smooth muscle myosin heavy chain (SMMHC) stained focal myoepithelial
cells around the larger lobules (Figure 6).
The LG is composed of various kinds of cells such as acinar, duct, and myoepithelial