(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. 1. Identification of Hox/Pbx- and Meis-binding sites within element C.
Part of the chick element C sequence is shown, with the different binding
sites (horizontal arrows) and the mutations that have been introduced into
each of them (vertical arrows). Gel retardation analyses were performed with
the probes schematized underneath the gels and the protein extracts indicated
above. A cross within a site indicates that it is mutated. The retarded
complexes are indicated by brackets and the specificity of the binding was
established by competition with oligonucleotides carrying high-affinity
Hox/Pbx- or Meis-binding sites (Competitor) or mutated versions unable to bind
these factors (Mut competitor). FP, free probe.