SLC5A5 and neoplasm: These included two additional animals in the MV-NIS with 131I at 24 hours group (three of 10 animals tumor-free), four animals from the MV-NIS + 131I at 48 hours group (five of 10 animals tumor-free), and three animals from the MV-NIS + 131I at 72 hours group (three of six animals tumor-free).