Figure 18.2 Transporter distribution in human liver. Cryofixed human liver (from surgically resected liver tissue) was stained for the bile salt export pump BSEP (red) and the bilirubin transporter MRP2 (green). Most immunoreactivity is found in a tubular configuration of the canaliculi, and some is found in vesicular structures within the cells. The two transporter proteins are distributed unequally within these vesicles. Bar: 10 mm.
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