![dorsal edge of somite 21 (T-9), longitudinal section of surface ectoderm, surface ectoderm](/drem/stage12/Z3/S438Z3.jpg)
![](/drem/rulerbg.png)
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Carnegie Embryo #8943 | Location: 08-06-07
Keywords: dorsal edge of somite 21 (T-9), longitudinal section of surface ectoderm, surface ectoderm
Source: The Virtual Human Embryo.
Keywords: dorsal edge of somite 21 (T-9), longitudinal section of surface ectoderm, surface ectoderm
Source: The Virtual Human Embryo.