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.
Explorations of Africa. In the official role of a medical missionary, he set forth to Africa, arriving in Cape Town, South Africa in March of 1841. A few years later, he married Mary Moffat; the couple would have several children.
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.