Dividing Breast Cancer Cell (IMAGE) University of California - San Diego Caption A triple-negative breast cancer cell during cell division. Tubulin in red; mitochondria in green; chromosomes in blue. Credit Wei Qian, National Cancer Institute Usage Restrictions No restrictions. License Public Domain 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.