Expression of zebrafish CRYBA2 orthologs, cryba2a and cryba2b, during embryonic development. Expression of cryba2a (a, d) and cryba2b (b, c, e, f) in whole mount embryos (a, b, d, e) and frontal sections of the head at the level of the eyes (c, f) in 22-hpf (a–c) and 48-hpf (d–f) embryos; lateral views (a, b, d) and a dorsal view (e) are shown. Please note strong and specific expression of both genes in the developing lens (l); on- optic nerve, r-retina.