IFNA17 and atrial fibrillation: Levels of expressing IFNα were stable from P1-P5 IFNα-AF-MSCs (11490.5 ± 107.5 to 11,422 ± 68.5 pg/ml, P > 0.05, Figure 3(a)) while hardly any IFNα expressed was tested in CM of AF-MSCs (911.5 pg/ml, P < 0.01, Figure 3(a)).