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Levels expressed relatively to housekeeping gene transcripts were normalized with respect to HMEC-hTERT cells. ER/PR: expression analysis of the estrogen and progesterone receptor, + means >10% expressing cells. HER2+/−: amplification status of the ERBB2 gene. SBR: Scarff-Bloom-Richardson grade. Metaplastic tumors include malpighian and sarcomatoïd carcinomas.
