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.
APC
A type of immune cell that boosts immune responses by showing antigens on its surface to other cells of the immune system. An APC is a type of phagocyte. Also called antigen-presenting cell.