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Overall survival (OS) based on the central nervous system (CNS) status. Kaplan-Meier plot comparing OS of patients’ cerebrospinal fluid (CSF) samples negative by both flow cytometry (FCM) and conventional cytology (CC) (CNSneg), occult CSF samples positive by FCM and negative by CC (OCNSDpos), and CSF positive by both FCM and CC (MCNSDpos).
