Interactions among ectodermal cells

Inductive interactions:
Interactions among ectodermal cells

INDUCER:	Ectoderm cells
TARGET:	Ectoderm cells
STAGE:	Mid-cleavage - mid-blastula
INDUCTION OUTCOME:	Normal development of ectoderm
PROOFS:	Some aboral ectoderm-specific genes, i.e., CyIIIa, Spec1 and Spec2a, are not expressed at normal levels in dissegregated cells. Similarly, PlHbox12 expression is also extinguished in dissegregated cells
SPECIES:	Strongylocentrotus purpuratus, Paracentrotus lividus
COMMENTS:	Interactions may occur within both the oral and aboral ectoderm territories, but no oral ectoderm specific markers are avaliable for this stage
REFERENCE:	Hurley et al., 1989, Stephens et al., 1989, Di Bernardo et al., 1995