Fig. 2

(a) Matrix PCA plot. The PC1 to PC4 analysis was performed on the results of microRNA expression variation using LNA-array probe on test group of samples; due to the color key information, the most differences belong to PC1 and between samples PR and PNR. Normalized log ratio values were used for the analysis. (b) Each row represents a microRNA and each column represents a sample. The color scale illustrates the relative expression level of microRNAs. Red color represents an expression level below the reference, and green color represents expression higher than the reference genes. Pooled sample groups were used in order to reach more exact analyses and the results mentioned here is related to pooled samples. Here, PR means pool of reject samples while PNR means pool of nonrejected samples and R means one reject sample while NR means one nonrejected sample