PDX1 (Pancreas/Duodenum Homeobox Protein 1, PDX-1, Glucose-sensitive Factor, GSF, Insulin Promoter Factor 1, IPF-1, Insulin Upstream Factor 1, IUF-1, Islet/Duodenum Homeobox-1, IDX-1, Somatostatin-transactivating Factor 1, STF-1, IPF1, STF1) (FITC)