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. Author manuscript; available in PMC: 2015 Feb 19.
Published in final edited form as: Curr Protoc Toxicol. 2014 Feb 19;59:1.12.1–1.12.20. doi: 10.1002/0471140856.tx0112s59

Figure 1. Stages of embryo development.

Figure 1

Anterior is left and dorsal is up. Neuroblasts (light purple, at stage 8–11). Ventral nerve cord (VNC) and brain neurons (purple, at stage 12–17). Endoderm/midgut (red). Mesoderm (green). Foregut/Hindgut (Blue). (See text for discussion. Adapted from (Hartenstein, 1993))