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.
Dates for holidays on the Jewish calendar are expressed in the Torah as day x of month y.. Accordingly, the beginning of month y needs to be determined before the proper date of the holiday on day x can be fixed.ewish holidays, also known as Jewish festivals or Yamim Tovim (×××× ×××××, Good Days, or singular ××× ××× Yom Tov, in transliterated Hebrew [ English /ËjÉËm ËtÉËv, joÊm ËtoÊv/ ]), are holidays observed by Jews throughout the Jewish year.