Evi1 mRNA in situ hybridization was carried out using a full length Evi1 cDNA probe [35] (link) using standard protocols. Probes were labeled using a DIG RNA Labeling Kit (Roche Applied Science, Tokyo, Japan). Detection was via an anti-DIG antibody coupled to alkaline phosphatase (Roche, Tokyo, Japan) followed by staining with BCIP-NBT (Bromo-4-chloro-3-indolyl Phosphate/Nitro Blue Tetrazolium) (Nacalai, Tokyo, Japan) as previously described [36] (link).
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