Figure 5 | Scientific Reports

Figure 5

From: Skeletal plasticity in response to embryonic muscular activity underlies the development and evolution of the perching digit of birds

Figure 5

The early development of hind limb muscles and tendons:

(a) Whole-mount immunofluorescence against myosin in quail embryos between HH34 and HH36 reveals the development of musculus extensor hallucis longus (EHL), m. flexor hallucis longus (FHL) and m. flexor hallucis brevis (FHB); (b) Whole-mount immunofluorescence against tenascin in quail embryos reveals the insertions of EHL (whitearrow), FHB (white arrowhead) and FHL (red arrowhead) and the secondary insertion of the EHL (red arrow); (c) Schematic representation of the foot musculoskeletal system at HH36 and the muscular forces proposed to provoke the twisting of Mt1.

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