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Fig. 5. Expression of Xvax2 (A–C,G,H) and Xvax1b (D–F,I) as detected in transversal sections of stage 41/42 Xenopus embryos following whole-mount in situ hybridization. (A–F) Left to right sections show expression at progressively posterior levels; arrowhead points to the hypophysis. (G–I) Transversal sections under a higher magnification show the expression of Xvax2 in the ventral part of the retina (G,H) and the coexpression of Xvax2 (H) and Xvax1b (I) in the optic nerve (arrows). h, hypothalamus; ch, optic chiasm. |