Basal-Like Breast Cancer Cells (image) University of North Carolina Health Care Caption Basal-like breast cancer cells (pictured) make up the majority of the triple-negative subtype. Researchers from UNC discovered that the triple-negative subtype contains significant genetic diversity. Credit Perou Lab/UNC Usage Restrictions None 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.