Based on the NIH health information topics you requested to receive information about, we thought you'd be interested in this story from the NIH Director's Blog. Making Personalized Blood-Brain Barriers in a Dish Posted on June 27th, 2019 by Dr. Francis Collins The blood-brain barrier, or BBB, is a dense sheet of cells that surrounds most of the brain's blood vessels. The BBB's tiny gaps let vital small molecules, such as oxygen and water, diffuse from the bloodstream into the brain while helping to keep out larger, impermeable foreign substances that don't... Read More... Follow Dr. Collins on Twitter Get posts via RSS Feed Update Your E-mail Address | Add Subscriptions | Unsubscribe If you have questions or problems with the subscription service, please contact subscriberhelp.govdelivery.com. For all other inquiries about NIH programs and activities, please contact Ask NIH. Before writing, please view our Frequently Asked Questions page, our Health Information page, or Search our website. This service is provided to you by the National Institutes of Health. NIH…Turning Discovery Into Health®      This email was sent to myhcistech.healthnews360@blogger.com using GovDelivery Communications Cloud on behalf of: National Institutes of Health (NIH) · 9000 Rockville Pike · Bethesda MD 20892 · 301-496-4000 / TTY 301-402-9612