Hemoglobin is an iron-containing protein found in the blood of nearly all vertebrates and many invertebrates. It transports oxygen from the lungs or gills of an animal to the tissues. Four polypeptide chains, each wrapped in a specific way around its own heme group, make up the hemoglobin molecule.
Correction Appended. Alger Hiss, the erudite diplomat and Harvard-trained government lawyer who was convicted of perjury in an espionage case that became one of the great riddles of the Cold War, died yesterday at Lenox Hill Hospital in New York City. He was 92 and lived in Manhattan.
Trotsky may have been out of Stalinâs sight, but he was never out of his mind. As the outspoken exile continued to castigate his foe, Trotsky was found guilty of treason by a show court and condemned to death. On the early morning hours of May 24, 1940, a group of 20 gunmen stormed Trotskyâs walled compound to carry out the sentence.