Skip to main content


Springer Nature is making SARS-CoV-2 and COVID-19 research free. View research | View latest news | Sign up for updates

Figure 1 | Journal of Biology

Figure 1

From: Fishing for the signals that pattern the face

Figure 1

Pharyngeal arch and neurocranial cartilage patterns in wild-type and Hh-deficient zebrafish larvae. Alcian-stained cartilages were dissected and flat mounted; dorsal views are shown, anterior to the left. (a) The wild-type (WT) pharyngeal arches at 4.5 days postfertilization include: the mandibular arch (arch 1), containing Meckel's cartilage (m) and the palatoquadrate (pq); the hyoid arch (arch 2), containing the ceratohyal (ch) and hyosymplectic (hs); and five more posterior, branchial arches (3-7), each containing a ceratobranchial cartilage. (b) The wild-type neurocranium at 4.5 days postfertilization includes paired trabeculae (t) and an ethmoid plate (e). (c) Neurocranial defects in sonic hedgehog (shh) mutants. Trabecular cartilages fuse (arrows) at the midline. e, ethmoid; n, notochord; t, trabecula. Panels (b) and (c) taken from [19].

Back to article page