Fig. 5.
Tbx2 and Tbx3 protein expression in epithelial derived tissues at late fetal and early postnatal stages. (A-F) Double IF staining on frozen sections at E17.5 shows Tbx2 is expressed in the islets in both insulin-positive cells and glucagon-positive cells (white arrows in C and F show double labeled cells in the merged images). Similar expression is seen at P7 (G-I). (J-L) Tbx3 expression is limited to exocrine tissue at P7 (yellow arrow in L). Scale bar in I = 20μm (AI); scale bar in L =50μm (J-L).