Figure 6: Fluorescent in situ hybridization (FISH) of (A-D) Gli1, (E-H) Sox9, (I-L) Sost, and (M-P) Fgf18 at E16.5 and P0 of Fgf9^null and WT mice.

At E16.5, Fgf9^null embryos had increased (B) Gli, (F) Sox9, and (N) Fgf18 expression compared to (A,E,I,M) WT embryos. At P0, Fgf9^null neonates had less (H) Sox9 and (L) Sost, and similar (D) Gli1 and (P) Fgf18 expression compared to (C,G,L,P) WT neonates (scale bar = 100μm; n = 3 per genotype for each time point).