Figure 4From: Piwi-Interacting RNAs (piRNAs) Are Dysregulated in Renal Cell Carcinoma and Associated with Tumor Metastasis and Cancer-Specific SurvivalConcordance of piRNA expression profiling between paired frozen and FFPE samples by deep sequencing. The piRNA expression of each frozen and FFPE sample pair was analyzed by deep sequencing. Log2-transformed expression levels were compared, and Pearson correlation was used to calculate the similarity between the each pair of samples. L12 and L31, ccRCC; N4 and N18, benign kidney samples.Back to article page