GUCY2C and colorectal carcinoma: However, since the PDT CRC experimental groups, which received the final BNC plus laser irradiation, reported the most significant forms of late apoptotic cell death (34% ***) in comparison to all other groupings, these findings suggest that the conjugated anti-GCC mAb, actively enhanced PS uptake and retention in combination with AuNPs passivation, thus producing the most favorable form of late apoptotic cell death.