Fig. 3. Comparison of the bab1 and bab2 mRNA distribution patterns in ovaries of white prepupae (A-C) and leg imaginal discs of late 3rd instar larvae (D,E). (A) A lateral view (anterior is upwards) showing high levels of bab2 expression in terminal filaments (arrow) and lower levels in the apical cells (large arrowhead) and the swarm cells (small arrowhead). (B) Lateral view, and (C) top view showing the specific expression of bab1 in the terminal filaments. (D) bab2 and (E) bab1 show a similar expression in the primordium of tarsal segments TS1-TS4 in leg imaginal discs. A 4.2 kb genomic fragment of bab1 that includes the first exon and a full-length cDNA of bab2 were used as probes for tissue in situ hybridization.
