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Relative gene expression of PTCH1. PTCH1, the target gene of the HH-GLI signaling pathway, 24h after GANT61 or LiCl treatment. LiCl downregulates PTCH1 expression in 4/5 HNSCC cell lines, and GANT61 in 3/5 lines. * denotes a statistically significant difference from non-treated (NT) cells (p < 0.05).
