Figure 3 - full size

Figure 3. Fig. 3. Cre recombination of loxP and loxP variant sites. Each of the eight loxP variants shown (M1-M8) were inserted into pS, replacing both of the loxP sites, and tested for recombination in vivo. All of the sites, except lox M3, M5, and M7, supported detectable levels of recombination by wild-type Cre.