Figure 2From: Distinct distribution and prognostic significance of molecular subtypes of breast cancer in Chinese women: a population-based cohort study Double immunofluorescence staining for ERα/ERβ. The same commercial breast cancer TMA slides were used to validate ERα staining. TMA cores C2 and C8, strong ERα nuclear staining. F10, weak ERα nuclear staining. F6, negative ERα staining. ERα fluorescent positive signals were comparable to standard single staining for ERα (original magnification: ×100).Back to article page