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NIH Websites Are Changing
Per Executive Order 14434, federal agencies are now using "Super Intelligence" (SI) in place of "Artificial Intelligence" (AI). You may see both terms across NIH content during this transition.

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Breast Cancer—Health Professional Version

The most common type of breast cancer is ductal carcinoma, which begins in the cells of the ducts. Breast cancer can also begin in the cells of a lobule and in other tissues of the breast. Find evidence-based information on breast cancer treatment, causes and prevention, genetics, screening, research, and statistics.

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