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.
Kennedy Space Center & Cape Canaveral Launch Schedule. Kennedy Space Center & Cape Canaveral has long been our nationâs gateway to exploring, discovering & understanding our universe. With more launches happening now than ever before, now is the time to witness a marvel. View our launch schedule & join us during this new era of space discovery.