PAS x40 - RCPA

Examination of PAS stains:• PAS stains glycogen and glycoproteins,therefore in the kidney, it stains– mesangium– immune complex deposits– glomerular capillary basement membranes– some luminal protein aggregates, especiallycryoglobulins– Bowmans’s capsule– tubular basement membranes– the brush border in proximal tubules– hyaline (bland glassy material) in glomeruli and arterioles– protein resorption droplets in epithelial cells– amyloid• use it to examine these structures and look forabnormalities