Lindsay VanSomeren is a personal finance writer based out of Kirkland, Washington. Her work has appeared on Business Insider, Credit Karma, LendingTree, and more. Rachel Witkowski is an award ...

Figure 1 The blood-brain-barrier structure and cellular composition. The BBB is a highly complex structure, made up of brain microvascular endothelial cells, pericytes, astrocytes and a non-cellular ...