Epithelia page 14

Contents

Yves Clermont, Michael Lalli, Zsuzsanna Bencsath-Makkai
LIGHT-MICROSCOPIC HISTOLOGY ATLAS

1. Epithelia

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

1.14 Intestinal villi cut transversely and stained with PA-Schiff to show glycoproteins

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Transverse sections of intestinal villi of a dog stained with periodic acid-Schiff (PAS) and hematoxylin. PAS stains glycoproteins purple.

In this section, PAS stains the mucigen granules of the goblet cells (*). These goblet cells are intercalated between the other pale columnar epithelial cells that compose this simple columnar epithelium.

The striated borders of these columnar cells are also PAS-positive owing to the carbohydrate-rich cell coat (glycocalyx) associated with the membrane of the microvilli (arrowheads).

The nuclei of goblet cells (N) and the lamina propria (LP) underlying the epithelium are also indicated.

Stain: PAS-Hematoxylin
Magnification: ×700

The text and images of this Histology Atlas, by Yves Clermont, Michael Lalli & Zsuzsanna Bencsath-Makkai, are licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 2.5 Canada Licence and cannot be modified without the written permission of the authors. Use of any text or images must carry an acknowledgement which includes a link to the original work.