The Pkhd1 HA-Flox mouse line will be described elsewhere (manuscript in review). Briefly, this line has exon 67 flanked by lox P sites and three copies of the HA tag “knocked-in” in-frame to the C-terminus of FPC in exon 67. In our previous in vitro studies, we had found that similar modification did not change the trafficking properties of FPC18 in MDCK cells. After establishing a heterozygous Pkhd1 HA-Flox line, we excised the neo cassette by crossing with a Flp-expressing mouse.
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