Fig. 3
Expression of sox11a and sox11b during early development. A,B: Anterior dorsal views of whole-mount 1-somite stage embryos. C,D: Flat mounts of 1-somite stage embryos, labeled with mRNA probes for sox11a and sox11b(blue) and with krox20 (red). A-D: Anterior to the left. Arrow heads mark krox20 staining, representing prospective rhombomeres r3 and r5. Both sox11a and sox11b share an anterior medial domain of expression. In addition, sox11a is expressed as a broad stripe just anterior to, and overlapping with, the krox20 stripe in prospective rhombomere 3. In contrast, sox11b is expressed most highly between the krox20 stripes in prospective rhombomere 4, and weakly more posteriorly. Scale bar = 100 µm.