The primary function of the thyroid is the production of the iodine-containing thyroid hormones, triiodothyronine (T3) and thyroxine (T4) and the peptide hormone calcitonin. 1  T3 is so named because it contains three atoms of iodine per molecule and T4 contains four atoms of iodine per molecule.
David Livingstone was born on March 19, 1813, in Blantyre, South Lanarkshire, Scotland, and grew up with several siblings in a single tenement room.
He stood as the official Labour Party candidate for Mayor in the June 2004 elections, which he won with a total of 828,380 first-and second-preference votes. On 1 May 2008 Livingstone was defeated in his second re-election bid by Conservative candidate Boris Johnson, and his term as Mayor of London ended on 4 May 2008.He has announced his intention to run again for the post of London mayor in 2012.ivingstone was born in Lambeth, London, England, the son of Ethel Ada (Kennard), a professional dancer, and Robert Moffat Livingstone, who was of Scottish descent and worked as a ship's master in the Merchant Navy.