The Cleveland medical journal . usual dimensions are: transverse50-60 mm. (2-2^ in.), thickness of lateral lobes 18-20 mm.(24 in.), length of lateral lobes 50-60 mm. (2-2>4 in.) Microscopically the gland is a closed system of more or lesstubular and saccular alveoli distended with a substance, the colorand consistency of honey. This so-called colloid makes up overYo of the bulk of a normal gland. It sharply abuts the alveolarepithelium and stains a clear uniform pink with eosin. Adjoiningalveoli frequently stain of different intensity. The alveoli rangefrom 1/3 mm. to 1 mm. in diameter. The
The Cleveland medical journal . usual dimensions are: transverse50-60 mm. (2-2^ in.), thickness of lateral lobes 18-20 mm.(24 in.), length of lateral lobes 50-60 mm. (2-2>4 in.) Microscopically the gland is a closed system of more or lesstubular and saccular alveoli distended with a substance, the colorand consistency of honey. This so-called colloid makes up overYo of the bulk of a normal gland. It sharply abuts the alveolarepithelium and stains a clear uniform pink with eosin. Adjoiningalveoli frequently stain of different intensity. The alveoli rangefrom 1/3 mm. to 1 mm. in diameter. The epithelial cells liningthe alveolus are generally cubical or flat-cubical, though thisvaries for different districts, in goitrous localities a low columnarepithelium is normal. Histologists have distinguished two types of gland cells; (1)chief cells, comprising the greater number, are finely granularwith no clear cut cell boundaries and their free ends seeminglyare continuous with the colloid, (2) colloid cells, fewer in num-. Fig. Thyroid and Parathyroid (dog) Fig. II. Normal Adult Human Thyroid(Baltimore), Zenker
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