Major immune system branch has hidden ability to learn

Half of the immune system has a hidden talent, researchers at Washington University School of Medicine in St. Louis have discovered. They found the innate immune system, long recognised as a specialist in rapidly and aggressively combating invaders, has cells that can learn from experience and fight better when called into battle a second time. Scientists previously thought any such ability was limited to the immune system's other major branch, the adaptive immune system...

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