Download Air Conditioning and Refrigeration Repair by Roger Fischer, Ken Chernoff PDF

By Roger Fischer, Ken Chernoff

A standard experience consultant to keeping and repairing all kinds of cooling and refrigeration devices.

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This process of alteration in functional differentiation is reflected in the cytoplasm and not the nucleus. 2 lists the characteristics of metaplastic squamous cells. The first indication of a metaplastic reaction is the appearance of a single layer of primitive cells between the basement membrane and the columnar cells (Fig. 8A). These multiply to form several layers (Fig. 8B), and as they mature, they begin to show squamous differentiation by acquiring more cytoplasm (Figs. 8C and D). The columnar cell layer may be retained superficially; however, it eventually sloughs off.

Atrophic smear consisting of only parabasal cells. A B Figs. 11A and B. Liquid-based preparations. A: Atrophic smear showing several tissue fragments of squamous epithelium of intermediate and parabasal type. B: Atrophic smear with a lack of maturation. 3 CYTOPATHOLOGIC FEATURES OF THE ATROPHIC CERVICAL–VAGINAL SMEAR Variable cellularity Miniature polygonal to round squamous cells with orangeophilic cytoplasm and dot-like pyknotic nuclei (red atrophy or pseudoparakeratosis Parabasal cells with nuclear enlargement and pale, smudgy chromatin Occasional intermediate cells with binucleation or multinucleation Pleomorphic forms with nuclear enlargement; smudgy, pale to hyperchromatic nuclei Tissue fragments of atrophic parabasal epithelium Bare nuclei with smudgy chromatin Blue blobs Estrogen effect—none epithelium.

21 22 Chapter 1: Overview remember that no matter how extreme or bizarre cytoplasmic features appear, they cannot differentiate malignant from benign. Stroma The term stroma describes the supporting tissue or matrix of an organ, in contrast to functioning tissue or the paren- chyma. The supporting tissue presents several characteristics, which are, at times, unique to a lesion. It can be a loose myxoid with abundant ground substance, collagenized, fi brillar, chondroid, osteoid, or could contain amyloid (Fig.

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