Fig. 2
From: Cell-free microRNA-21: biomarker for intracranial aneurysm rupture
Principal component analysis (PCA). Red, control group; dark red, aneurysm without daughter aneurysm group; blue, aneurysm with daughter aneurysm group; gray, ruptured aneurysm group. The distribution of squares illustrates that miRNAs expression are various among different groups