Fig. 5
From: FGF- and SHH-based molecular signals regulate barbel and craniofacial development in catfish
Expression pattern of catfish orthologs of Shh (SaShh) and Fgf8 (SaFgf8). a–d, transcripts of SaShh in Amur catfish embryos at 1 dpf (a, c), 2 dpf (b, d) are shown. e–h, transcripts of SaFgf8 in Amur catfish embryos at 1 dpf (e, g), 2 dpf (f, h) are shown. a, b, e, f are lateral views. c, d, g, h are dorsal views. Anterior is left in a, b, e, f and the upper side in c, d, g, h. i–p, coronal sections of Amur catfish embryos at 2 dpf. i, m and k, o are the slice of anterior and posterior head, respectively. i-l, transcripts of SaShh are shown. m–p, transcripts of SaFgf8 are shown. j, l, n and p are high magnification images of boxes in i, k, m and o. Arrowhead indicates SaFgf8 expression domain at the medial epidermal layer. am, anterior midbrain; amdb, anterior mandibular barbel; anr, anterior neural ridge; epi, epidermis; fl, facial lobe; mes, mesenchyme; mhb, midbrain–hindbrain boundary; mxb, maxillary barbel; pmdb, posterior mandibular barbel; zli, zona limitans intrathalamica. Scale bars are 500 μm in A–G, and 200 μm in i–p