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Fig. 2. Fgf2-soaked bead induces Spalt4. (A) Whole-mount in
situ hybridization 5 hours after Fgf bead implantation. Arrow points to the
bead. (B) Higher magnification of bead in (A). Arrow shows plane of
section in C. (C) Section of region around bead in B. Arrowhead points
to Spalt4 signal. (D) Whole-mount in situ hybridization five
hours after BSA bead implantation. Arrow points to bead. (E) Higher
magnification of region around bead in D. Arrow shows plane of section in F.
(F) Section of region around bead in E.