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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: Dev Dyn. 2014 Oct 18;243(12):1571–1580. doi: 10.1002/dvdy.24191

Figure 2. osr1 expression is disrupted in Nodal signaling mutants.

Figure 2

(A–D) dorsal view (A’–D’) view of the animal pole. At shield stage osr1 is expressed in the shield and germ ring of the embryo (A, A’). Maternal zygotic one eyed pinhead (MZoep) mutants, which lack all Nodal signaling, show a complete loss of osr1 expression (B, B’). Mutants bonnie and clyde(bon) and schmalspur(sur), which have reduced Nodal signaling, show a reduction of osr1 expression (C, C’ and D, D’, respectively).