Fig. 2: Microdialysate samples cluster based on patient identity and catheter location.
From: Blood-brain barrier disruption defines the extracellular metabolome of live human high-grade gliomas

a Spearman correlation map of the 44 catheters from all 15 microdialysis cases (14 patients). Dot colours indicate catheter location, IDH status, and primary or recurrent status. (Minimal correlation: −0.7, maximal correlation: 1). b Hierarchical clustering heat map (Ward method, Euclidean distance measure) of the 44 catheters based on 162 metabolites present in at least 90% (40/44) catheters. (Normalised abundance by MetaboAnalyst: minimum, −6 to maximum, 6).