FIG. 5.

Mrp4 is expressed in brain capillaries. (a) Frozen tissue sections prepared from the brains of Mrp4^+/+ and Mrp4^−/− FVB mice were treated with anti-Mrp4 monoclonal antibody. (b) Panel 1 shows a cross-section of wild-type mouse capillary, revealing red blood cells (asterisk), surrounding capillary wall, and luminal Mrp4 staining (red); panel 2 shows a rat capillary, revealing interior red blood cells (asterisk). Arrows indicate the capillary wall and the luminal endothelial cell Mrp4 staining (red). Magnifications are indicated to the left of the panels.