Fig. 5. Analysis of BrdU incorporation in the developing SMP. (A-C) At E9.5, BrdU
incorporation is comparable on both sides of the bilateral SMP (A), with
proliferating cells evenly distributed along the DV axis. This pattern is
reiterated at E9.75 in sections cut through the posterior stomach (B). The
initial outgrowth of the left-sided SMP in the region of the pancreatic bud is
accompanied by a clustering of BrdU-positive nuclei at the prospective apex
(yellow arrowheads in C). dp, dorsal pancreatic bud; st, posterior
stomach.