Figure 2 (modified from20): Nodal ligands promote C&E morphogenesis and germ layer formation in zebrafish blastoderm explants.
(A) Diagram of injection and explantation of zebrafish embryos. (B-E) Representative bright-field images of live blastoderm explants of the indicated conditions/genotypes at the of equivalent the 2–4 somite stage. N = number of explants from two to four independent trials. (F) Time-lapse DIC series of a representative explant from a WT embryo injected with 10 pg ndr2 RNA. (G)Representative images of the whole-mount in situ hybridization for the transcripts indicated in explants from WT embryos injected with 10 pg ndr2 RNA. Scale bars are 200 μm.