Fig 4. Expression pattern of Gli1, Ptch1 and Pax9 in Gata6; Gli3 allelic series.

In situ hybridization of Gli1 (A-G), Ptch1 (H-N) and Pax9 (O-U) of hindlimb buds of indicated genotypes at E11.5. Black and red arrows point to normal and ectopic signals, respectively. Blue arrows and arrowheads indicate reduced and loss of Pax9 signals, respectively.