Fig. 4From: A multicenter retrospective study of heterogeneous tissue aggregates obstructing ventricular catheters explanted from patients with hydrocephalusA Total number of cells (CyQuant positive nuclei) in each ventricular catheter (VC) obstruction-class. B Number of the average number of CD68 positive cells per hole in each VC obstruction-class. In both graphs, each data point represents a single explanted VC. Differences between groups were assessed using Kruskal–Wallis’s test with Dunn’s multiple comparisons test, P < 0.05 (*), P < 0.01 (**) and P < 0.0001 (****)Back to article page