Parafollicular cells anong thyroid follicles.
The calcitonin secreting C-cells (parafollicular) cells have pale cytoplasm and are found between the follicules. Note the amount of cytoplasm
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Endocrine System
Canine pituitary gland containing adeno- and neuro-hypophysis.
This section contains the pars distalis, the pars intermedia, reamins of Rathke’s pouch, and the pars nervosa. The pars distalis
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Herring bodies in the neurohypophysis of a dog.
The nuclei seen in this section of the neurohypophysis belong to the supportive cells. The cell bodies of the unmyelineated
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Low Power Micrograph of Canine Pituitary.
This section contains the pars distalis, the pars intermedia, reamins of Rathke’s pouch, and the pars nervosa. The pars distalis
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Junction Between Z. Reticularis and the Medulla
The cells of the zona reticularis produce small amounts of sex hormones. Being steroid synthesising and metabolizing cells, they have
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Immunohistochemical Staining of Parafollicular Cells.
The C-cells/parafollicular cells are found detween the follicles. This is a picture of immunohistochemical staining using an antibody against calcitonin.
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Islet of Langerhans in canine pancreas at higher magnification
Organ: Pancreas, Tissue: Islet of Langerhans, Species: Dog. Comments: Several secretory cell types, plus a network of capillaries makes up
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Islet of Langerhans in canine pancreas
Organ: Pancreas, Tissue: Islet of Langerhans, Species: Dog. Comments: Islets of Langerhans are endocrine structures that occur as clusters of
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Acidophils in the pars distalis of the canine pituitary
Organ: Pituitary, Tissue: Pars distalis, Species: Dog. Comments: A few chromophobes are found among the numerous acidophils.
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Canine adrenal cortex with zona glomerulosa and zona fasciculata
System: Endocrine, Organ: Adrenal, Tissue: Cortex. Species: Dog. Comments: Low power micrograph of dog adrenal cortex including the zona arcuata
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Thyroid follicles from a Canadian goose
Organ: Thyroid, Species: Avian (Canadian goose). Comments: The thyroid contains numerous follicles of various sizes. The colloid inside the follicles
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Thyroid gland of Canadian goose
Organ: Thyroid, Species: Avian (Canadian goose). Comments: Low power micrograph showing numerous follicles.
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Canine pars distalis with acidophils
Organ: Pituitary, Tissue: Pars distalis, Species: Dog. Comments: The majority of the cells in this micrograph are acidophils. The rest
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Canine adrenal cortex
Organ: Adrenal, Tissue: Cortex, Species: Dog. Comments: Adrenal cortex with capsule. The cells in the outermost zone of the cortex
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Cortex-Medulla junction in the adrenal gland of the horse
Organ: Adrenal, Tissue: Cortex-Medulla junction, Species: Horse. Comments: Junction between the zona reticularis and the medulla in horse adrenal. The
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Zona fasciculata in the adrenal cortex of the horse
Organ: Adrenal Cortex, Tissue: Zona fasciculata, Species: Horse. Comments: The cells of the zona fasciculata are vacuolated due to the
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Adrenal cortex of the horse showing the three zones
Organ: Adrenal, Tissue: Cortex, Species: Horse. Comments: Low power micrograph showing zona glomerulosa, fasciculata and reticularis. Cells in the zona
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Zona glomerulosa in the adrenal cortex of the horse
Organ: Adrenal, Tissue: Zona glomerulosa, Species: Horse. Comments: The cells in the zona glomerulosa are arranged in high arcs. The
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Parathyroid gland of the horse
Organ: Parathyroid, Species: Horse. Comments: Parathyroid gland of the horse. Small cluster of eosinophilic oxyphils are scattered the more numerous
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Parathyroid gland of the horse at low power
Organ: Parathyroid Species: Horse. Comments: Low power micrograph of the parathyroid gland with a small portion of the thyroid also
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Pars intermedia in the pituitary of the horse with remains of Rathke’s pouch
Organ: Pituitary, Tissue: Pars intermedia, Species: Horse. Comments: Pars intermedia, remains of Rathke’s pouch and part of pars distalis. In
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Neurohypophysis of the horse with nerve fibers and pituicytes
Organ: Pituitary, Tissue: Pars nervosa, neurohypophysis, Species: Horse. Comments: Numerous unmyelinated axons of secretory neurons are seen here. The cell
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Adenohypophysis (pars distalis) of the horse with many acidophils
Organ: Pituitary, Tissue: Pars distalis, adenohypophysis, Species: Horse. Comments: Numerous acidophiles are present. They stain bright orange in an H&E
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Adenohypophysis of the horse with acidophils
Organ: Pituitary, Tissue: Pars distalis, adenohypophysis, Species: Horse. Comments: Numerous acidophiles are present. They stain bright orange in an H&E
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Pituitary gland of the horse showing the three main parts at medium magnification
Organ: Pituitary, Species: Horse. Comments: A higher magnification of the three regions of the pituitary. Remains of Rathke’s pouch are
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Pituitary gland of the horse showing the three main parts
Organ: Pituitary, Species: Horse. Comments: The pars distalis, with numerous glandular cells, stains darker than the pars nervous which contains
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Pituitary gland of the horse. Coronal section at low power
Organ: Pituitary, Species: Horse. Comments: Low power micrograph of the pituitary showing, in a concentric fashion, the pars distalis, pars
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Adrenal gland of the horse adjacent to the vena cava
Organ: Adrenal, Species: Horse. Comments: The adrenal gland (right) in this species is attached to the vena cava (left). The
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Adrenal gland of the horse adjacent to the vena cava
Organ: Adrenal, Species: Horse. Comments: The adrenal gland (right) in this species is attached to the vena cava (left). Notice
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Islet of Langerhans in the pancreas of a primate.
Organ: Pancreas, Tissue: Islet, Species: Primate. Comments: Islet of Langerhans in the pancreas. The best way to demonstrate the various
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