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Fig. 1. RMCE in the mouse Ednra gene. (A) Strategy for
targeting and knock-in of lacZ. Probes for genotyping are indicated
as 5'- and 3'-probes. B, BamHI; Bl, BlnI; C,
ClaI; P, PstI; Pm, PmeI. (B) Southern blot
analysis of PstI- or BlnI/PmeI-digested genomic DNA
of the offspring from an intercross of heterozygotes, probed with the
5'- or 3'-probes, respectively. (C) Genomic PCR analysis
for sequential Cre-lox-mediated recombination with primers indicated
in A.