Must be something pathological with this kidney as there is an abnormally high number of macrophages in the blood vessel – in the middle, running from top-to-bottom….and vice versa 😉
Excellent positivity of ramified ( quiescent) microglia.
Positivity is restricted to collagen associated with exterior of Bowman’s capsule and mesangium of glomerulus.
Cortico-medullary junction is shown. collagen surrounding the Collecting ducts of the medulla are positive.
Collagen matrix is negative. Associated tendon matrix is positive ( green); as is matrix within artery ( red) and vein ( blue).
Strong labelling of collagen between muscle layers and around individual fibres but, absent from the collagen of the adventitia.
Basal lamina obvious around sebaceous glands but absent around hair follicle.