“…The observations by Melick and co-workers 7 on the carcinogenicity of para-aminobiphenyl in human subjects were presented before the Convention of the American Urological Association, Los Angeles, May [16][17][18][19]1955. It is regrettable that Melick's paper was not discussed at that time and that the results of the present experiment with this com¬ pound on dogs were not reported, since our study was already completed.…”