Positivity appears to be confined to collecting ducts, parietal cells of Bowman’s capsule and, interestingly, the macula densa of the distal convoluted tubule.

A similar pattern of positivity when compared with adult liver?

( note the membraneous hepatocyte and the cytoplasmic bile duct positivity)

A sub-population of parietal cells are positive. Also, macula densa. Also….PCT?

Note the membrane positivity of hepatocytes. Intense cytoplasmic positivity is seen in bile ducts.

Protoplasmic astrocytes.