SLC5A5 and glioma: The expression of the reporter gene human Sodium Iodide Symporter (NIS) and the incorporation of isotopes such as Technetium-99m pertechnetate (99mTcO4−), Rhenium-188 perrhenate and Iodine through NIS has been utilised to label and image various cells such as hepatocarcinoma cells, cervix tumour cells, glioma cells and mammary gland cells [14], [15], [16], [17], [18].