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.
Three marinas with launch ramps are located on Lake Mohave, two in Arizona (Willow Beach and Katherine Landing) and one in Nevada (Cottonwood Cove). An additional launch ramp is located at Princess Cove on the Arizona side near Katherine Landing.