Fig. 4A–H.
Multiple connexins are expressed in developing somites. A, B Adjoining serial transverse sections from an embryo probed for CX36 (brown) and CX42 (blue-purple) expression. Connexin42 and CX36 are both expressed in the myotome (B) and CX42 is enriched in the vasculature (A). C, D Transverse (C) and horizontal (D) sections from an embryo after two-color in situ hybridization with CX42 (blue-purple) and CX43 (brown) probes. E Horizontal section from an embryo hybridized with CX36 (blue-purple) and CX43 (brown) probes. F Transverse section from an embryo hybridized using a CX45 probe. G, H Transverse sections from an embryo after in situ hybridization with CX45 (blue) and PAX3 (brown) probes. All tissues were obtained from HH stage 24 embryos. (A aorta, b.v. blood vessel, D dermomyotome, DRG dorsal root ganglion, M myotome, N notochord, S somite, SC spinal cord)