Inductive interactions:
veg2-to-veg2 signal

TARGET: veg2
STAGE: Mid-cleavage - mid-gastrula
INDUCTION OUTCOME: promotion of endoderm gene expression within the veg2 domain
PROOFS: A single micromere retained after deletion of 3 micromers after 4th cleavage were deleted suffices to endow 75-100% of veg2 progeny with the capacity to express Endo16 at a normal level and to form a normal functional vegetal plate
SPECIES: Strongylocentrotus purpuratus
COMMENTS: One micromere contacts with one or two of veg2 blastomeres, thus they must communicate with one another
REFERENCE: Ransick and Davidson, 1995

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