Barrett's esophagus refers to an abnormal change in the cells of the lower portion of the esophagus. It is characterized by the replacement of the normal stratified squamous epithelium lining of the esophagus by simple columnar epithelium with goblet cells (which are usually found lower in the gastrointestinal tract).
U.S. Space Camp is a camp and related programs owned and operated by the Alabama Space Science Exhibit Commission's U.S. Space & Rocket Center in Huntsville, Alabama.
Camps are listed under the state where the camp is actually located, even though the parent organization may be in a different state. For example, YMCA Camp Thunderbird is listed under South Carolina, even though it is a branch of the Charlotte, North Carolina YMCA. ** NEW as of 12/17/2016 ** - Look for Facebook icons that are in the process of being added to the left of camp names for direct links to those camps' Facebook pages.