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CHAPTER 12 - EXOCRINE GLANDS
Histology Guide
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MICROGRAPH

NAME
EM 257 Zymogen Granules
TISSUE
Exocrine Pancreas
(rat)
IMAGE SIZE
8,049 x 8,820 pixels
55 MB
FILE SIZES
22,086 KB (grayscale)
30,355 KB (color)
MAGNIFICATION
Unknown
PIXEL SIZE
0.00953 nm
SOURCE
Stanley L. Erlandsen
Department of Genetics, Cell Biology and Development
School of Medicine
University of Minnesota
Minneapolis, MN

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EM 290 Zymogen Granules

Exocrine Pancreas

Scanning electron micrograph (SEM) of a frozen section prepared using a technique known as etching. Etching removes ice from the surface of the frozen section by exposing it to a vacuum. This reveals deeper structures previously hidden by the ice.

This technique results in the three-dimensional appearance of exocrine cells seen in this specimen. Acini are composed of a single layer of pyramidal cells around a central lumen. The large zymogen granules are clustered in the apical cytoplasm of these cells facing the lumen.

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