Finasteride-primed male MSC more significantly inhibit AAA formation. A) Aortic dilation data of MSC and finasteride-primed MSC. B) Confocal microscopy revealing convergence of channels with tissues treated with finasteride-primed male MSC and stained for DNA (blue), smooth muscle cells (green), 5-alpha-reductase (teal), and RFP cells (red). C) Confocal microscopy revealing convergence of channels with tissues treated with female MSC and stained for DNA (blue), smooth muscle cells (green), 5-alpha-reductase (teal), and RFP cells (red).