Medical Definition of Red blood cells. Red blood cells: The blood cells that carry oxygen. Red cells contain hemoglobin and it is the hemoglobin which permits them to transport oxygen (and carbon dioxide). Hemoglobin, aside from being a transport molecule, is a pigment. It gives the cells their red color (and their name).
Alexander Milne Calder (August 23, 1846 â June 4, 1923) was a Scottish American sculptor best known for the architectural sculpture of Philadelphia City Hall. Both his son, Alexander Stirling Calder, and grandson, Alexander Sandy Calder, became significant sculptors in the 20th century.
Lloyd Alexander. Lloyd Chudley Alexander was born on January 30, 1924 in Philadelphia, Pennsylvania. He says that his childhood was ordinary, but there's nothing ordinary about him. During World War II, he served in the US Army and rose to be a staff sergeant in intelligence and counterintelligence.