The blood-brain barrier provides essential protection against pathogens while allowing needed oxygen and nutrients to pass. However, one challenge it presents is getting therapeutics delivered to the brain and central nervous system. Bioasis Technologies has developed a way to attach fusion proteins to drugs to allow them to pass the blood-brain barrier. We spoke to Mark Day, CEO of Bioasis, about its platform technology, what is known about it from testing to date, and the potential therapeutic implications of being able to deliver drugs systemically that can reach the central nervous system and brain.