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. 2019 Feb 25;22(4):531–538. doi: 10.1038/s41391-019-0134-5

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© The Author(s) 2019

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Fig. 2 — a Cytoplasmic epithelial staining for phosphorylated ERK1/2. NP normal gland, BN benign glands adjacent to primary prostate cancer, PCa untreated primary prostate cancer, CRPC castration resistant prostate cancer. b Absence (negative) or presence (positive) of ERK1/2 phosphorylation within resected primary prostate cancer. Recurrence is associated with ERK1/2 phosphorylation