Click here to close Hello! We notice that you are using Internet Explorer, which is not supported by Xenbase and may cause the site to display incorrectly. We suggest using a current version of Chrome, FireFox, or Safari.

Xenbase Image ID: 123344

Figure 1. A portion of the Xenopus Anatomical Ontology's developmental map. Shown are the anatomical features to which the sensorial layer of the ectoderm gives rise. Types in green boxes have develops_from relationships to their parents. Also shown here are examples of the other two anatomical relationships that are integral to the XAO: ectoderm is_a primary germ layer; and the auditory ossicle, etc., are parts_of the auditory apparatus. The develops_from relationships are transitive: given that the lens develops from the lens placode and the lens placode develops from the sensorial layer, it is implied that the lens develops from the sensorial layer (and more generally from ectoderm). Transitivity operates over is_a relationships as well, e.g. the lens may be inferred to develop from a primary germ layer.

Image published in: Segerdell E et al. (2008)

Image downloaded from an Open Access article in PubMed Central. Copyright © 2008 Segerdell et al; licensee BioMed Central Ltd.

Larger Image
Printer Friendly View

Return to previous page
Xenbase: The Xenopus laevis and X. tropicalis resource.
Version: 4.9.2
Major funding for Xenbase is provided by the National Institute of Child Health and Human Development, grant P41 HD064556