Figure 4. The expression of HOXD3 in KIRC tissues and cell lines. (A) HOXD3 expression was suppressed in KIRC tumor samples compared to normal tissue in the TCGA database. (B, C) The HOXD3 mRNA and protein levels were evaluated by qRT-PCR and western blotting in the KIRC tumor and normal tissue. (D, E) The HOXD3 mRNA and protein levels were identified by qRT-PCR and western blotting in 786-O, CAKI-1, and HK-2 (**p < 0.01).