- Radionuclide angiography with technetium-99m in vivo labeled erythrocytes does not lead to induction of mutations in the HPRT gene of human T-lymphocytes. van Dam, F.J., Camps, J.A., Woldring, V.M., Natarajan, A.T., van der Wall, E.E., Zwinderman, A.H., Lohman, P.H., Pauwels, E.K., Tates, A.D. J. Nucl. Med. (1991)