Hormone Receptor Positive Breast Cancer (IMAGE) Ecole Polytechnique Fédérale de Lausanne Caption This image shows a tissue section from an intraductal xenograft's hormone receptor-positive breast cancer, stained for fibrillar collagen networks. Credit George Sflomos (EPFL) Usage Restrictions For media, educational and non-commercial purposes only. Please mention credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.