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.
Unholy War On October 6, 1973 â Yom Kippur, the holiest day in the Jewish calendar (and during the Muslim holy month of Ramadan) â Egypt and Syria opened a coordinated surprise attack against Israel.fter the war, Saudi Arabia, Kuwait, and the United Arab Emirates pledged billions of dollars in economic and military aid to the frontline parties in the conflict with Israel â Syria, Jordan, Egypt, and the PLO.