- Drug-induced perturbations in the in vivo distribution of oncological radiotracers--I. 5-Fluoro-6-3H-2'-deoxyuridine influenced by nitrobenzylthioinosine 5'-phosphate (NBMPR-P). Wiebe, L.I., Knaus, E.E. International journal of radiation applications and instrumentation. Part B, Nuclear medicine and biology. (1986)