Figure 6From: Amnion formation in the mouse embryo: the single amniochorionic fold modelSeries of longitudinal sections of an embryo with large exocoelomic cavity (ec). Artificial colors as in Figure 2. (A) Midline section characterized by the presence of the allantoic bud (Al-bud), and endodermal furrow (En-frw) close to the prospective anterior separation point. (B) Section adjacent to the midline section A. (C-D) Neighboring sections cut twice through the amniochorionic fold (ACF), which result seemingly in an anterior fold and posterior fold with their respective cavities. (E) A more lateral section reveals that the exocoelomic cavity extends around the egg cylinder. (F) Most lateral section of the series. Scale bar: 100 μm (G) Position of the longitudinal sections (A to F) on a schematic transverse section of the embryo at the level of the dashed line in A. Grey reflects the EC; no fill represents the proamniotic canal (PAC). (C'-D') Magnifications of the boxed areas shown in figure panel C and D, respectively. Scale bar: 50 μm.Back to article page