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"Precisely quantifying the amount of three different HER growth proteins, along with several other proteins believed linked to breast cancer, did not predict a patient's outcome after treatment for HER2-Positive Breast Cancer with Herceptin, say Mayo Clinic researchers. HER2-positive breast cancer gets its name from a protein called human epidermal growth factor receptor 2 that promotes cancer cell growth."^^<http://www.w3.org/2001/XMLSchema#string>
<http://medicalxpress.com/news/2011-12-proteins-outcome-herceptin-treatment-her2-positive.html>