Xenopus Anatomy Ontology

Last uploaded: September 3, 2024
Id http://purl.obolibrary.org/obo/XAO_1000038
http://purl.obolibrary.org/obo/XAO_1000038
Preferred Name

NF stage 22

Definitions
Nieuwkoop and Faber stage 22, corresponding to an embryo of age 24 hr at 22-24 Celsius and having the following external morphological criteria: Distinct protrusion of eyes. Initial groove between jaw- and gill-areas only at latero-dorsal side. Lateral and ventral outlines of embryo slightly concave. Anal opening displaced to ventral side. Vitelline membrane becoming wider. Length: 2.0 - 2.2 mm.
Type http://www.w3.org/2002/07/owl#Class
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