MONKEY BUSINESS

In 2020, Cole tested the health effects of social isolation in a group of macaque monkeys, who spent 14 days isolated in smaller cages (blue), and, later, 14 days isolated in a space with a juvenile macaque (green). Changes in the immune system, such as an increase in inflammation-related classical monocytes (A) and downregulation of the type I interferon response (B), were significantly reversed in monkeys when they were paired with a juvenile.