Figure 2.

Group I–III genes identified by array, Southern, and PCR analysis. Absent genes were categorized based on criteria listed in Table 2. Black squares indicate genes identified as absent by array analysis and confirmed as absent by PCR or Southern analysis; gray squares indicate genes identified as absent by array analysis alone; and white squares indicate genes identified as absent by PCR or Southern analysis. The two regions of group III genes comprising newly identified Vibrio seventh pandemic islands are labeled VSP-I and VSP-II.