(Downloading may take up to 30 seconds.
If the slide opens in your browser, select File -> Save As to save it.)
Click on image to view larger version.

Fig. 7. Lowering FGF8 levels causes a reduction in placode formation
and neural differentiation. (A-E) X. laevis embryos
displayed dorsoanteriorly. Embryos were cultured with XlMOF8 (10 ng) or
MOSAF8a (60 ng) until the neural tube stage 20; lineage tracer (pink). (B,C)
XlMOF8 caused sox2 mispatterning (40/42), so did MOSAF8a but to a
lesser degree (20/22). (E) MOSAF8a resulted in a slight expansion of the
rx1 domain toward the posterior (16/20). (F-M) The effect of
FGF8 reduction on early neuronal differentiation in X.
tropicalis. XtMOF8 (8 ng), MOSDF8 (17 ng) and MOSAF8a (16 ng) were
injected into one cell at the two-cell stage; injected side is oriented
downwards. (F,H,J,L) Embryos were cultured until neurula stages; injected
embryos demonstrate an early strong reduction in neuronal differentiation
[XtMOF8 (20/20), MOSDF8 (9/9), MOSAF8a (16/16)]. (G,I,K,M) Embryos were
cultured until the early tadpole stage; injected embryos demonstrate posterior
truncations and continued reduction in differentiated neurons