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 PUSHKIN'S BIOGRAPHY. 1  Alexander Sergeyevich Pushkin was born on the 26th of May, 1799 in Moscow in the noble family (his father was the retired major). 2  In the same day the emperor's granddaughter was born. That's way the chimes had been heard all over the town during the whole day.