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.
Alexander the Great, also known as Alexander III or Alexander of Macedonia (born 356 bce, Pella, Macedonia [northwest of ThessalonÃ­ki, Greece]âdied June 13, 323 bce, Babylon [near Al-á¸¤illah, Iraq]), king of Macedonia (336â323 bce), who overthrew the Persian empire, carried Macedonian arms to India, and laid the foundations for the Hellenistic world ...