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Fig. 6. Inhibition of MAP Kinase signaling does not disrupt specification of the
endoderm territory and formation of the oral/aboral axis. Expression of
42C (A-F), brachyury (G-L) and goosecoid (M-R)
genes after inhibition of the ERK function. Control embryos on the left,
U0126-treated embryos on the right. U0126 treatment does not affect the
expression of endoderm (42C) and oral ectoderm (goosecoid
and brachyury) marker genes. mB, mesenchyme blastula; lG, late
gastrula; vv, vegetal view; ov, oral view.