Mammary tissues cells (IMAGE) Cold Spring Harbor Laboratory Caption Mammary tissue is made up of a variety of cells, including epithelial (pink), immune (cyan), and fat (black) cells visible in this cross-section of a mouse mammary gland. CSHL Associate Professor Camila dos Santos' team identified and cataloged thousands of human and mouse breast cells to understand the origins of breast cancer. Credit Camila dos Santos/dos Santos lab, CSHL/2021 Usage Restrictions Attribution required 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.