
Fig. 5. Modification of rhombomere identity of r5 cells in Krox-20 homozygous embryos. (A,B) Flat-mounted hindbrains of wild-type (A) and Krox20lacZ/lacZ (B) embryos at the 8 s stage processed for ISH with probes for Hoxb1 and Cdh6 probes (both purple). (C,D) Flat-mounted hindbrains of 13 s Krox20lacZ/lacZ embryos stained with X-gal (C) or stained with X-gal and processed for Mafb/kr ISH (D). (E,F) Flat-mounted hindbrains of wild-type (E) and Krox20lacZ/lacZ (F) 20 s embryos processed for Mafb/kr ISH. Rostral is towards the top.