ACTB and Stroke: In this case, the TIA subgroup was significantly greater than the asymptomatic group (Figure 3; density ratio of HN/β-actin 1.35±0.23 vs. 0.79±0.11, p<0.05) while the stroke subgroup showed a trend (density ratio of HN/β-actin 1.28±0.17 vs. 0.79±0.11, p = 0.08).