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Fig. 5 | Zoological Letters

Fig. 5

From: Developmental fates of shark head cavities reveal mesodermal contributions to tendon progenitor cells in extraocular muscles

Fig. 5

Lineage tracing of the mandibular head cavities. a-f″ Transverse sections of CM-DiI-injected embryos aligned with adjacent sections immunostained with myosin heavy chain antibody (b′, d′, and f′), stained with Alcian blue (AB) (b′, d′, and f′), or hybridized in situ with an Scx antisense probe (b″, d″, and f″). By 42 dpi, DiI-labeled cells (magenta) were found in the superior oblique muscle, and the Scx-positive tendon progenitor cells were found at the scaffold of all rectus eye muscles (asterisks) and the insertion site of the lateral rectus muscle (insLR). insLR, tendon progenitor cells at the insertion site of the lateral rectus muscle; LR, lateral rectus muscle; SO, superior oblique muscle. Scale bars = 200 μm

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