Inductive interactions:
veg2-to lower-veg1 signal
| INDUCER: | veg2 |
| TARGET: | veg1 |
| STAGE: | Mid-cleavage - mid-blastula |
| INDUCTION OUTCOME: | specification of endodermal veg1 components |
| PROOFS: | veg2 + mesomere combinations generate a complete tripartite gut, in contrast, veg1 cannot similarly recruit mesomeres and, if combined with mesomeres, it, at best produces a small invagination |
| SPECIES: | Lytechinus variegatus |
| COMMENTS: | |
| REFERENCE: | Logan and McClay, 1998 |