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.
Clan Calder is a Highland Scottish clan. The clan is recognised by the Lord Lyon King of Arms but as it does not currently have a clan chief it is therefore considered an Armigerous clan.he name of Calder did not disappear and the Calders of Asswanly received lands near Elgin in 1440. In 1686 this family obtained a baronetcy of Nova Scotia. The most notable member of this branch of the clan was Robert Calder who saw substantial service in the Napoleonic Wars.