(C) Boxplot with half-violin plot displaying the distribution of autoantibody reactivity in 48,718 plasma samples. Twenty-seven samples over the reactivity threshold of -log(EC50) ≥ 2 and fitting error < 20% were considered as hits in the primary screen. Black dots correspond to single samples. The boxplot divides the data set into three quartiles. The box extends from the first to the third quartile values of the data set, with a line at the median. Whiskers show the range of the data (minimum and maximum). 