XB-IMG-78279
Xenbase Image ID: 78279
FIG. 3. Notochord signals influence development of the amphibian hypochord. VEGF expression, detected by in situ hybridization, is used as
a marker for the hypochord. (A) Transverse section through the midgut region of a stage 32 frog embryo. The hypochord develops from the dorsal
endoderm, immediately ventral to the notochord. The hypochord (h) is indicated. (B) Removal of the notochord at stage 14 results in the failure
of hypochord formation. Somites fuse medially, separating the neural tube and the endoderm. Dorsal endoderm (de) and the normal position of
the hypochord (arrowhead) are indicated. (C) Transplantation of an additional notochord results in the development of an enlarged hypochord.
The endogenous notochord is on the left and the transplanted notochord on the right. Notochord (n) and somites (s) are indicated. Image published in: Cleaver O and Krieg PA (2001) Copyright © 2001. Image reproduced with permission of the Publisher, Elsevier B. V.
Image source: Published Larger Image Printer Friendly View |