IAH1 and Stroke: Difference in expression of isoamyl acetate hydrolyzing esterase 1 (IAH1) did not reach significance due to large variation (MS: 21 of 88 nodules, per donor 43.7% ± 31.0%, stroke: 7 of 24 nodules, per donor 25.1% ± 20.9%, p = 0.32, Fig. 5a–l).