Leucine-rich repeat containing G protein-coupled receptor 4 (LGR4) promotes the Wnt signaling through interaction with R-spondins or norrin. Using PCR amplification from rat ovarian cDNAs. we identified a naturally occurring Lgr4 splice variant encoding only the ectodomain of Lgr4. which was named Lgr4-ED. https://www.chiggate.com/