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14.1 The major lineages of the amniote mesoderm (Part 1) 14.1 The major lineages of the amniote mesoderm (Part 2) 14.2 Gastrulation and neurulation in the chick embryo, focusing on the mesodermal component (1) 14.2 Gastrulation and neurulation in the chick embryo, focusing on the mesodermal component (2) 14.3 Specification of somites 14.4 Neural tube and somites seen by scanning electron microscopy 14.5 Notch signaling and somite formation (Part 1) 14.5 Notch signaling and somite formation (Part 2) 14.5 Notch signaling and somite formation (Part 3) 14.5 Notch signaling and somite formation (Part 4) 14.6 Somite formation correlates with the wavelike expression of the hairy1 gene in the chick 14.7 Possible scheme for the regulation of the clock through which an Fgf8 gradient regulates a Wnt oscillating clock, which in turn controls a Notch clock 14.8 Ephrin and its receptor constitute a possible cut site for somite formation (Part 1) 14.8 Ephrin and its receptor constitute a possible cut site for somite formation (Part 2) 14.9 Epithelialization and de-epithelialization in somites of a chick embryo 14.10 Segmental plate mesoderm transplanted into a different region in a younger embryo differentiates according to its original position 14.11 Diagram of a transverse section through the trunk of a chick embryo on days 2–4 (Part 1) 14.11 Diagram of a transverse section through the trunk of a chick embryo on days 2–4 (Part 2) 14.12 Model of major postulated interactions in the patterning of the somite 14.13 Conversion of myoblasts into muscles in culture (Part 1) 14.13 Conversion of myoblasts into muscles in culture (Part 2) 14.13 Conversion of myoblasts into muscles in culture (Part 3) 14.14 Schematic diagram of endochondral ossification (Part 1) 14.14 Schematic diagram of endochondral ossification (Part 2) 14.15 Endochondral ossification (Part 1) 14.15 Endochondral ossification (Part 2) 14.16 Skeletal mineralization in 19-day chick embryos that developed (A) in shell-less culture and (B) inside an egg during normal incubation 14.17 Respecification of the sclerotome to form each vertebra 14.18 Scleraxis is expressed in the progenitors of the tendons 14.19 Induction of scleraxis in the chick sclerotome by Fgf8 from the myotome (Part 1) 14.19 Induction of scleraxis in the chick sclerotome by Fgf8 from the myotome (Part 2) 14.19 Induction of scleraxis in the chick sclerotome by Fgf8 from the myotome (Part 3)