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The tiny CA2 region of the brain allows memories to influence the decision to be socially aggressive and may contribute to abnormal social behaviors associated with some mental illnesses.

An increase in mental health care is being driven by people with little or no psychological distress, while many with serious distress don’t get the care they need, Columbia researchers have found.

Columbia researchers have discovered that the human intestine has a reservoir of blood-forming stem cells and that the cells play a central role in the success of organ transplantation.