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Some of the glomerular tufts
have an immature (foetal) (or S-phase) appearance. These have poorly
developed capillary lumina and appear hypercellular, with too many
darkly staining nuclei close together.
These glomeruli are inappropriate for the age of the dog.
This is a low power view
of the renal corticomedullary junction, with an arcuate artery at
the centre of the field. Apart from immediately surrounding the
artery, there is far too much dense interstitial fibrous tissue
present, especially in the medulla. There are also pockets of non-suppurative
(lymphocytic) inflammation in the dense fibrous tissue.
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