Fig. 2. The fgfA synexpression group and effects of treatments with
lithium chloride or nickel chloride on expression of fgfA and
pax2/5/8. (A-D) Schematic representation of fgfA
expression in sea urchin. (E-P) Spatial expression of sprouty
(E-H), pea3 (I-L), pax2/5/8 (M-P). (Q-Zb) Morphology and
effects on fgfA and pax2/5/8 expression of treatments that
perturb animal-vegetal or oral-aboral polarity; (Q-T) 60 hour embryos;
(U-Zb) 24 hour embryos.