Human Breast Cell Lacking HOXA5 (IMAGE) Johns Hopkins Medicine Caption A human breast cell lacking HOXA5 (right) shows protruding structures similar to tumor cells, compared with a normal human breast cell (left). Credit Courtesy of Sara Sukumar, Ph.D. Usage Restrictions None 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.