<abstract xmlns="http://www.w3.org/1999/xhtml"><p> The Harderian gland of 110 laying hens was histologically investigated from the time of hatching to the period of 10 months of age. Tissue sections were stained with haematoxylin and eosin, periodic acid-schiff (PAS) and methyl green-pyronin technique. The research shows that lymphoid tissue is colonised by three types of cells: heterophils, lymphocytes and plasma cells. The number of these cells is directly dependent on the bird’s age. During the lifetime of the hens there gradually comes a shift in the dominance of these three cell types. Lymphoid nodules are detected only in 40-day-old chickens, while later in adult birds the Harderian gland is the organ which contains the largest number of mature plasma cells. Some plasma cells contain Russell bodies with different size and shape.</p></abstract>

The Harderian gland of 110 laying hens was histologically investigated from the time of hatching to the period of 10 months of age. Tissue sections were stained with haematoxylin and eosin, periodic acid-schiff (PAS) and methyl green-pyronin technique. The research shows that lymphoid tissue is colonised by three types of cells: heterophils, lymphocytes and plasma cells. The number of these cells is directly dependent on the bird’s age. During the lifetime of the hens there gradually comes a shift in the dominance of these three cell types. Lymphoid nodules are detected only in 40-day-old chickens, while later in adult birds the Harderian gland is the organ which contains the largest number of mature plasma cells. Some plasma cells contain Russell bodies with different size and shape.

Developmental Changes of Lymphoid Tissue in the Harderian Gland of Laying Hens

Department of Anatomy and Histology with Embriology, Veterinary Faculty, University of Sarajevo, Bosnia and Herzegovina

Department of Pathology, Clinical Center, University of Banja Luka, Bosnia and Herzegovina

Macedonian Veterinary Review

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Developmental Changes of Lymphoid Tissue in the Harderian Gland of Laying Hens"}

The Harderian gland of 110 laying hens was histologically investigated from the time of hatching to the period of 10 months of age. Tissue sections were...

Developmental Changes of Lymphoid Tissue in the Harderian Gland of Laying Hens

Published Online: Nov 18, 2015

Page range: 83 - 88

Received: Dec 02, 2013

Accepted: Feb 13, 2013

DOI: https://doi.org/10.14432/j.macvetrev.2014.02.009

Keywords
Harderian gland, lymphoid tissue, development

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Developmental Changes of Lymphoid Tissue in the Harderian Gland of Laying Hens

Published Online: Nov 18, 2015

Page range: 83 - 88

Received: Dec 02, 2013

Accepted: Feb 13, 2013

DOI: https://doi.org/10.14432/j.macvetrev.2014.02.009

KeywordsHarderian gland, lymphoid tissue, development

© 2015

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
Harderian gland, lymphoid tissue, development