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Example for the representation of a structure-based subclass hierarchy in the amphioxus ontology (AMPHX). Using the amphioxus endostyle as an example, the partonomy relationships between different terms (“part_of”, “develops_from”, and “is a”) as well as the developmental stages during which the structure is present (“starts during” and “ends during”) are shown. The figure has been adapted from the Graph view utility proposed at OLS (Côté et al., 2008).
