Breast Cancer Cells, NIH (IMAGE) University of California - San Diego Caption This is a three-dimensional culture of human breast cancer cells, with DNA stained blue and a protein in the cell surface membrane stained green. Credit National Institutes of Health Usage Restrictions Credit NIH 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.