Figure 1

Detection of differentially expressed genes after facial nerve transection Radioactive labeled DD-PCR fragments after electrophoretic separation using a polyacrylamide gel and exposition to an x-ray film. Gel image illustrates that fragments with high and low expression can be identified. Lanes 1 and 2 represent the operated side. Lanes 3 and 4 represent the un-operated side (facial nucleus). By comparing operated and control side, fragments which are considered to be differentially displayed appear in both lanes for either operated or un-operated sides (arrows). Fragments indicating either up- or down-regulation have been chosen for further analysis.