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. Here, SLC10A1 is linked to colonic neoplasm.