SLCO1B3 and colonic neoplasm: The immunoreactivities of OATP1B2 [36], a rat ortholog of OATP1B3, and NTCP did not differ between colon tumor and normal colon tissues, which provided further support for the minor role of these proteins in ICG-mediated tumor enhancement, while expression of these membrane transporters in both colon tumor and normal colon tissues may cause increase in the background intensity.