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 month falls in July or August. This is the 5th month, in the Hebrew (Jewish) calendar, God's calendar. The 9th of Av is a day of fasting (only one day's fast), and it is the last day of the 3 weeks of mourning that started on the 17th of Tammuz, the 4th month. We mourn these days, showing that we are standing with Israel.