The data are presented as the fold-change in gene expression relative to the value in the transfected cells not treated with N2+M3 (n = 4). M3 contained exendin-4, L685,458, and noggin. IH medium indicates the basal medium composed of IMDM and Hamm's F12. The detailed composition is listed in Table 1. *P < 0.05 (t-test or Mann-Whitney U test, as appropriate); error bars, S.D. The results obtained from the βTC6 cells were excluded from all the statistical analyses, because of the marked deviations from other values. N2, N2 supplement; VI, viral infection; Ins1, insulin I; Ins2, insulin II; Pcsk1, proprotein convertase subtilisin/kexin type 1; Pcsk2, proprotein convertase subtilisin/kexin type 2; Abcc8, the ATP-binding cassette sub-family C member 8; Slc2a2, solute carrier family 2 member 2; NeuroD1, neurogenic differentiation 1; Pax4, paired box gene 4; Pax6, paired box gene 6; Isl1, islet 1; Sst, somatostatin; Ppy, pancreatic polypeptide; Pdx1, pancreas duodenal homeobox 1; Ngn3, neurogenin 3; MafA, v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog A; Arx, aristaless related homeobox.