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Figure 4 | Breast Cancer Research

Figure 4

From: ER and HER2 expression are positively correlated in HER2 non-overexpressing breast cancer

Figure 4

RNA and protein levels. (a) ER RNA levels and (b) ER protein levels according to HER2 protein and gene-amplification levels (IHC HercepTest and FISH, respectively); IHC 0, n = 96; IHC 1+, n = 101; IHC 2+ FISH-ve, n = 13; IHC 2+ FISH+ve, n = 2; IHC 3+ FISH-ve, n = 5; IHC 3+ FISH+ve, n = 29; IHC 3+, n = 37. Means with 95% CI are shown (95% confidence intervals for IHC2+ FISH+ve subgroup are 4a, -5.1 to 5.8, and 4b, -892.2 to 1045; these were omitted for ease of visualization). CI, confidence interval; ER, estrogen receptor; FISH, fluorescence in situ hybridization; HER2, human epidermal growth factor receptor 2; IHC, immunohistochemistry; qRT-PCR, quantitative reverse-transcription polymerase chain reaction.

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