The FISH procedure was performed according to previously published methods [47 (link)]. 7 μm cryo-sections were cut for hybridizations. Lgr5 mRNA Stellaris probe (mouse: NM_010195) was designed by Probe Designer at www.singlemoleculefish.com and synthesized by Biosearch Technologies. The FISH probe set consists of 96 TMR fluorophore labelled oligonucleotides. DAPI nuclear dye was included during the final wash. Images were captured at 405nm and 568nm using 100x objective len by an Olympus FV1000 upright confocal microscope.
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