Editor's note

This special issue of Teratogenesis Carcinogenesis and Mutagenesis departs somewhat from the usual format of the journal. Following discussions with Dr. Parviz Pour, one of the discoverers of carcinogens that are capable of inducing pancreatic cancer, we concluded that a comprehensive group of articles on this elusive problem would be of general interest. The current series of papers gathered together by Dr. Pour are the result of the stimulus that his original studies have provided.