Fig. 2.

Schematic representation of one-step genotyping of the tetra-primer PCR system. The tetra primers are composed of a pair of common primers, a wt-specific primer and a loxP-specific primer. The green block is the common primer amplified sequence; the blue block is the wt-specific primer amplified sequence; the orange block is the loxP-specific primer amplified sequence; the red block is the loxP site