Fig. 2

Box plot representing cerebrospinal fluid (CSF) aquaporin 4 (AQP4) levels (on the left) and frequency analysis (on the right) in the two main groups: patients affected by neurodegenerative diseases (Deg), and patients not affected by degenerative diseases (Non-Deg + Con groups). The bar plot shows the number of patients with high and low AQP4 levels distributed in the two main groups (light for Deg and dark for Non-Deg + Con)