(B) Genotyping of KLF4loxp/loxp coupled AAV-Cre inducible mouse. 2x1011 particles of AAV7-Cre-mCherry or AAV7-mCherry were intraperitoneally injected into KLF4 loxp/loxp mice (6~8 weeks). Five weeks later, mice tails were cut and collected for DNA extraction and PCR analysis. PCR results were analyzed by 1% agarose gel. 