In MS and stroke, equal percentages of microglia nodules expressed C1qB (MS: 63 of 163 nodules, per donor 36.6% ± 6.0%, stroke: 22 of 68 nodules, per donor 30.5% ± 19.0%, p = 0.25, Fig. 4a–c). The gene discussed is C1QB; the disease is stroke disorder.