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.
Early years. Vladimir Ilich Lenin was born in Simbirsk (today Ulianovsk), Russia, on April 10, 1870. His real family name was Ulianov, and his father, Ilia Nikolaevich Ulianov, was a high official in the area's educational system. Because Lenin's father had risen into the ranks of the Russian nobility, Lenin grew up in fairly privileged circumstances.