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.
Table of Contents. Lenin was born Vladimir Ilyich Ulyanov on April 22, 1870, to an upper-middle class family in the Russian town of Simbirsk, on the Volga River.His father was an inspector of schools, and died in 1886.The next year his older brother, Alexander, was executed for taking part in a plot to assassinate Tsar Alexander III.able of Contents. Lenin was born Vladimir Ilyich Ulyanov on April 22, 1870, to an upper-middle class family in the Russian town of Simbirsk, on the Volga River.