This episode picks up where the last one ended.  Here we have, Dr. Jonathan Kipnis, a world-renowned neuroscientist, famous for his work on the relationship between the Central Nervous System and the immune system. He is best known for his discovery of meningeal lymphatic vessels, which changed the way people perceive Neuro Degenerative Diseases such as Alzheimer's and Multiple Sclerosis. He is also a recipient of the NIH's prestigious Director's Pioneer Award.