FIG. 3. Formation of the linear heart tube (stage 29). Transverse sections through the anteroventral, heart-forming region, showing endocardial (e), myocardial (m), and pericardial (p) cell layers. Sections (7 mm) are numbered commencing from the anterior end of the pericardial cavity. 3D models (viewed as indicated) demonstrate that the thickened, myocardial region of the splanchnic mesoderm (red) forms a trough, within which lies the endocardial tube (yellow).
Image published in: Mohun TJ et al. (2000)
Copyright © 2000. Image reproduced with permission of the Publisher, Elsevier B. V.
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