Endocrine Organs page 12

Contents

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

14. Endocrine Organs

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14.12 Rat thyroid follicle

Version française

Section of the thyroid of a rat that was injected with thyroid-stimulating hormone (TSH).

This section was stained with periodic acid-Schiff. The colloid of the follicles, which contains thyroglobulin, a glycoprotein, is intensely stained purple with PAS (*).

The presence of PAS-positive droplets (arrows) in the cytoplasm of follicular cells is also noticeable in this TSH-stimulated gland. These colloid droplets result from the activated endocytosis of the luminal colloid by the follicular cells (see details in Figure 14.7).

Stain: PAS-Hematoxylin
Magnification: ×1000

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.