Collecting ducts of the renal medulla.

I have no idea if this positivity is specific. In the PCTs positivity is diffuse, cytoplasmic. What seem to be DCTs show a basolateral positivity.

Cardiomyocyte positivity is confined to membranes. Invaginations of positivity ( in T/S myofibres) indicate points of branching.

Intense positivity is seen in the endothelial cells of the endocardium.

Medullary ray cell nuclei are positive.

A subset of tubule nuclei are positive ( ? collecting tubules)

Poor quality of section!

A subset of nuclei are positive.

I have no idea which cell type/phase gives this positivity.

The rbc positivity is not strong, so should not detract.

e18 specimen. Urothelial cell nuclei are positive.

e18 skin. Identical positivity in rat/mouse embryos.

I have only sampled one level, however.