Thyroid hormones (T 4 and T 3) are produced by the follicular cells of the thyroid gland and are regulated by TSH made by the thyrotropes of the anterior pituitary gland. The effects of T 4 in vivo are mediated via T 3 (T 4 is converted to T 3 in target tissues). T 3 is 3- to 5- fold more active than T 4.
May is Jewish American Heritage Month The Library of Congress, National Archives and Records Administration, National Endowment for the Humanities, National Gallery of Art, National Park Service and United States Holocaust Memorial Museum join in paying tribute to the generations of Jewish Americans who have helped form the fabric of American history, culture and society.
This Day In Jewish History 1919: Minnow nations sign 'Little Versailles Treaty' This Day in Jewish History 1924: The priest who noticed Jesus had been Jewish is born This Day in Jewish History 1942: Vichy regime unmoved by author's anti-Semitism, arrests her anyway On July 20, 1933, the Vatican and Germany signed an agreement that set the parameters of the relationship between the Roman Catholic Church and the newly formed Nazi government.