In frogs, maternally packaged Xwnt-11 leads to nuclear localization of __________ in the __________, which in response signals to adjacent cells to become the __________.
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a
β-catenin, Nieuwkoop center, Spemann organizer
b
nodal, signaling center, shield
c
Vg-1, vegetal region, Nieuwkoop center
d
Sonic hedgehog, limb bud, posterior
e
GFP, mesoderm, muscle and bone
b
nodal, signaling center, shield