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. 1999 Apr 5;145(1):191–201. doi: 10.1083/jcb.145.1.191

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Germband phenotypes in wb embryos. Wild-type embryos (A and B) and wb^k05612 embryos (C and D). (A and B) Dorsal view of living embryos at germband extension. (B) wb^k05612 embryo shows the posterior midgut invagination (arrow) and germband twisted abnormally to one side and not centered on the midline as in the wild-type embryo in A. (C and D) Lateral view (anterior left) of living embryos at the onset of germband retraction. An abnormal separation is observed between the mesoderm and ectoderm layers of the germband (C versus D, arrow).