Skip navigation

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Results 1 - 2 of 2 for Describing
  1. How Clinical Trials Work Video From the National Institutes of Health (National Heart, Lung, and Blood Institute)  
    ... and its effectiveness. Each clinical trial has criteria describing who can join. Children as well as adults, ...
    https://www.nhlbi.nih.gov/research/clinical-trials/how-studies-work - Videos
  2. Ask a Scientist: What Is Color Blindness? Video From the National Institutes of Health (National Eye Institute)  
    ... audio description This video features Dr. Matt McMahon describing optical illusions and how they play tricks on ...
    https://www.nei.nih.gov/.../nei-for-kids/ask-scientist-video-series - Videos