Fig. 2

CSF tau protein levels in ALS patients and controls. Comparison of tau protein (ng/l) levels in the CSF between the ALS and control group. The distribution of measured values was represented using box plots (the horizontal line inside the box represents the median, the lower edge of the box represents the first quartile, the upper edge represents the third quartile, whiskers indicate the maximum and minimum measured values, and if outliers were found in the dataset, they are plotted as circles and asterisks). ALS, amyotrophic lateral sclerosis; CG, control group; CSF, cerebrospinal fluid