Figure 2: Histograms of the retention frequency of the sturgeon and oyster RH panels. Hybrid cell lines are numbered on the X axis. Presence/absence of markers was estimated by PCR analysis. Their retention frequency (percentage of markers in the clone) is presented on the Y axis (Figures 2a and 2b). The hybrid cell lines selected on quantitative and qualitative criteria to constitute the RH working panels are represented by a vertical black line. Hybrid cell lines not retained in the final working RH panel are indicated by grey vertical lines. In panels 2c and 2d are presented the retention values of the different markers used to check the hybrid cell lines.