Figure 3. A-L: Whole mount in situ hybridization analysis of Xsuz12 expression starting from stage 15 (neurula). A, B, C, and G are dorsal views. D, F, and H are anterior views. E, I, G, K, and L are lateral views. G and L are magnifications of the head region as viewed laterally at stage 26 and 34, respectively. Inset in K shows an example of a whole-mount in situ hybridization that was performed with Xsuz12 sense probe. M-O: In situ hybridization analysis performed on traverse sections from the head region at stage 41. M and N sections are at the levels of forebrain and hindbrain, respectively. O is a traverse section in the spinal cord. Stages are indicated at the lower right corner of each image. ot, otic vesicle; ba, branchial arches; e, eye.