“…This observation was followed by extensive studies with radioactive iodine, and investigations by in vivo measurements and radioautography revealed that these tumours not infrequently stored iodine (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20). As would be expected it was mainly the well-differentiated alveolar and follicular adenocarcinomas that concentrated iodine.…”