Figure 1.

Comparison of bat and mouse forelimb morphogenesis and Prx1 expression. Dorsal view of the right side of an adult Carollia (A) and mouse (B) scaled for equivalent body length. (C) Developmental series of Carollia (bat) and mouse forelimbs at equivalent stages, anterior at top and distal to right. Staging is according to Cretekos et al. (2005) for bat and in days post-coitum (E) for mouse and is indicated at the bottom left of each panel. Bars (bottom right of each panel), 0.5 mm. (D) Prx1 RNA expression in the developing forelimb detected by whole-mount in situ hybridization for Carollia (bat) and mouse. Staging is according to Cretekos et al. (2005) for bat and in days post-coitum (E) for mouse and is indicated at the bottom left of each panel. Views are not to scale.