Vasculature cells and dopamine-producing neurons of the human brain, both generated from a patient’s stem cells in the Brain-Chip for research on Parkinson’s disease. The Brain-Chip was developed at Cedars-Sinai in collaboration with Emulate, Inc. A top-down view of the brain and vascular channels of a stained Brain-Chip shows brain microcapillary cells (red) interacting with dopamine neurons (white). Here, the Brain-Chip was stained with glucose transport molecule-1 (GLUT1), which is necessary for uptake of glucose from the blood, and tyrosine hydroxylase (TH), a key enzyme in dopamine production.