(5) The key is that both PIMs and thin HSILs develop from early immature metaplastic epithelium or reserve cell
proliferation of the TZ on the surface and/ or in the crypts.
Histochemical studies performed to compare the concentrations of oxidative enzymes of the oncocyte to those of normal salivary gland acinar and ductal cells have shown similarities between an oncocyte and the intercalated duct reserve cell
. However, some ultrastructural studies suggest that the salivary gland oncocyte may be an adaptive or compensatory hyperplastic cell occurring secondary to an undetermined somatic mutation rather than a purely degenerative process .
In fact, some immunohistochemical evidence suggests that ACC develops from the multipotent reserve cell
layer of the cervical epithelium that can show squamous or glandular differentiation .
CIN starts at the transformation zone especially in relation to the squamous metaplasia and reserve cell
hyperplasia, where there are sheets of compactly arranged small cells with scant cyroplasm, round nuclei and a high nuclear/cytoplasmic ratio.
Now, it has been widely accepted that both epithelial and mesenchymal (myxoid, hyaline, chondroid and osseous) elements often arise from the same cell clone, which may be a myoepithelial or a ductal reserve cell
. Lee et al examined formalin-fixed, paraffin-embedded tissues from 13 pleomorphic adenomas of female patients and the findings from them suggested that the stromal and epithelial cells in pleomorphic adenomas of the salivary gland arose from the same clone in most of the cases.
The two men and a woman, who lived in Sheffield, were a "reserve cell
" of the Basque separatist group and while in Britain plotted to cause explosions in Spain.
The two men and a woman were a "reserve cell
" of the Basque separatist group awaiting orders to commit attacks in Spain, it was claimed.
At each time the modules are under control of a concrete virtual cell or "reserve cell
", which consist of free modules, untaken to the respective moment (Abedzadeh,1997).
Adding a reserve cell
to a normal car battery can give drivers an extra margin of safety, says Reserve Power Cell (Deerfield Beach, FL).
Whereas ameloblastoma arises from odontogenic epithelium, adenoid cystic carcinoma is believed to originate in the intercalated duct reserve cell
or terminal tubule complex.(3)
Elimination of the hand-setting facilities and Led display and fitting a reserve cell
in place of the lithium battery allows the unit cost of the fuze to be trimmed by around 20 per cent.