The Cleveland medical journal . he capsule,which supports the larger arteries, veins and nerve tissue. Fromthe interlobular vessels branches enter the lobules, dividing themup into alveoli which are limited by small arterioles and a slighttrace of hyalin stroma, or in many instances by capillaries onlywith a single layer of endothelial cells. The endothelium issometimes flat, sometimes considerably swollen; most of thecapillaries are empty, though many contain a few red blood are two distinct types of cells in the alveoli. Type A (Fig. 8) is a large cell with a relatively small amo
The Cleveland medical journal . he capsule,which supports the larger arteries, veins and nerve tissue. Fromthe interlobular vessels branches enter the lobules, dividing themup into alveoli which are limited by small arterioles and a slighttrace of hyalin stroma, or in many instances by capillaries onlywith a single layer of endothelial cells. The endothelium issometimes flat, sometimes considerably swollen; most of thecapillaries are empty, though many contain a few red blood are two distinct types of cells in the alveoli. Type A (Fig. 8) is a large cell with a relatively small amountof protoplasm and a relatively large, pale, round or more fre-quently oval or even spindle shaped nucleus which has a finelygranular chromatin network and one, two or three small protoplasm is finely granular and slightly acidophilic. Thesecells vary greatly in size, the nuclei being from one to three orfour times as large as a red blood cell, while a few may be evenlarger. Allen—Tumors of the Carotid Body 547. Fig. 8. X500. Cells of type A, with relatively large, vesicular nuclei,predominate. Type B ( Fig. 9) is of about same size as A, with a rela-tively large amount of protoplasm, which is more homogeneous,and a relatively small, usually round or oval, very intensely stain-ing nucleus in which details as to chromatin and nucleoli cannotbe made out. The relative proportion of these two types of cells is veryvariable. In some fields type A predominates (Fig. 8), while inan adjacent field type B predominates (Fig 9) ; in still otherfields they are equally numerous; they may be intimately inter-mingled or each may be arranged in groups. Mitotic figures arenot seen but evidence of direct division is abundant.
Size: 1765px × 1415px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectmedicine, bookyear191
