Fig. 2From: The prognostic value of the Tau protein serum level in metastatic breast cancer patients and its correlation with brain metastasesOverall survival (OS) in the whole MBC population (n = 244) according to (a) the CEA serum level, (b) the CA 15–3 serum level, (c) the T-Tau serum level and (d) the HER2 ECD serum level. * NC: not calculableBack to article page