Some of the most important work of protecting the brain may depend on immune and other cell types, which make up a surprising 50% of the human brain. In this special Beyond Lab Walls video podcast episode—part of the Salk Institute’s 2026 Year of Brain Health—Salk President Gerald Joyce, MD, PhD, speaks with 尼古拉·艾伦，博士, a leading neuroscientist whose lab studies how non-neuronal brain cells shape brain function in health, aging, and disease.
