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.
Holocaust and Genocide Awareness Week. Yom HaShoah, or Holocaust Remembrance Day, is observed as a day of commemoration for the people who perished in the Holocaust and marks the anniversary of the uprising in the Warsaw Ghetto. The day is observed on the 27th of Nisan, the seventh month on the Hebrew calendar. Yom HaShoah will be observed on the following days on the Gregorian calendar: