a, Immunofluorescence analysis of p-S6 (red) and EGFP (Lgr5, green) expression in tumor tissues of vehicle or DT treated AOM/DSS mice 24h after injection. Nuclei were counterstained with DAPI. Representative images are shown (n=3 biological replicates, scale bar = 50 μm).
b, Immunoblot analysis of AOM/DSSATKN tumor organoids treated as indicated. For p-γH2AX and the corresponding α-tubulin loading samples were run on a separate gel (see SI). Representative results are shown (n=3).