Medulla of Feline Thymus
The medulla of the thymus is paler in staining when compared to that of the cortex. There are plasma cells,
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Lymphoid
Low Power Micrograph of Feline Thymus
The thymus is divided into lobes and then lobules. The cortex stains darker because the lymphocytes there are closely packed
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Red and White Pulp in Canine Spleen
This section was stained by the Gomori iron method in which the metal stained blue. The nuclear counter stain used
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Trabecular Artery in Canine Spleen
The trabecular artery has a distinctive tunica media made up of smooth muscle cells. It also has a tunica adventitia
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Trabecular Vein in Canine Spleen
The trabecular vein in the spleen has an tunica intima made up of a layer of endothelial cells. The rest
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Trabecular Artery and Vein in the Spleen of a Dog
The trabeculae in the spleen contain smooth muscle cells and connective tissue. The trabecular artery has its own muscular wall
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Trabecular Artery in Canine Spleen
This slide shows the longitudinal section of a trabecular artery in the spllen. Notice the smooth muscle cells that make
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Medulla of Lymphoid Nodule in Cloacal Bursa of Chicken
Several cells types are found in the medulla. The most obvious ones are the lymphocytes. The other cells inlude reticular
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Lymphoid Nodule in Bursa of Fabricius
The nodule has a darker staining cortex with densly packed small lymphocytes. The medulla contains cells of various sizes including
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Lymphoid Nodules and Surface Epithelium of Chicken Cloacal Bursa
The surface of the bursa fold is covered by a pseudostratified columnar epithelium. This micrograph shows three lymphoid nodules with
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Cloacal Bursa of Chicken
The cloacal bursa of Fabricius in birds is a lymphoid organ in the cloaca. Mucosal folds (pleicae) project into the
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Cortex of the canine thymus
System: Lymphoid, Organ: Thymus, Tissue: Cortex, Species: Dog. Comments: The cortex contains tightly packed small lymphocytes that make this area
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Medulla of the canine thymus with Hassall’s corpuscles
System: Lymphoid, Organ: Thymus, Tissue: Medulla, Species: Dog. Comments: The eosinophilic Hassall’s corpuscles are characteristic features of the thymus. The
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Cortex and medulla of the canine thymus
System: Lymphoid, Organ: Thymus, Species: Dog. Comments: One half of the micrograph shows the cortex with tightly packed small lymphocytes
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Thymus of the dog
The cortex stains darker than the medulla because the former is mostly made up of densely packed lymphocytes. The cortex
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Thymus of the dog at low power
A thin connective tissue forms the capsule of this organ. Connective tissue septae extending inward from the capsule divide the
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Peyer’s patch in the ileum of the dog, cut “en face”
System: Lymphoid, Organ: Ileum, Tissue: Peyer’s patch, Species: Dog. Comments: Peyer’s patch cut “en face”. As the cut slants deeper
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A lymphoid nodule in the Peyer’s patch
System: Lymphoid, Organ: Ileum, Tissue: Peyer’s patch, Species: Dog. Comments: Peyer’s patch cut “en face”. Crypts of Lieberkuhn surround a
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Peyer’s patch in the ileum cut “en face”
System: Lymphoid, Organ: Ileum, Tissue: Peyer’s patch, Species: Dog. Comments: Peyer’s patch cut “en face”. Crypts of Lieberkuhn surround the
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Peyer’s patch in the ileum
System: Lymphoid, Organ: Ileum, Tissue: Peyer’s patch, Species: Dog. Comments: Low magnification of the Peyer’s patch cut “en face”. The
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Canine thymus, medulla with Hassall’s corpuscles
Organ: Thymus, Tissue: Medulla, Species: Dog. Comments: In the medulla of the thymus the cells are further apart. Thus the
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Medulla of canine thymus with thymic corpuscles
Organ: Thymus, Tissue: Medulla, Species: Dog. Comments: In the medulla of the thymus the cells are further apart and the
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Cortex of Canine Thymus
In the cortex of the thymus illions of lymphocytes are produced here each day and these are, by definition, T
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