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SF culture outcome is not associated with worse clinical outcome in GBM. Kaplan–Meier-based overall survival (OS) curves for SF culture results for indicated histological entities of malignant glioma. SF+ (black), SF− (gray), and SFnp (dotted). Log-rank (Mantel–Cox) P-values are based on SF+ vs SF− or SF+ vs SFnp. Note a trend in decreased OS for SF+ grades II–III samples, while GBM samples show no difference.
