suppressive effect on pituitary TSH secretion (9). They also found that it was much more potent than T4 (10), although it was less abundant than T4 in the thyroid gland (11). Based on these findings Gross and Pitt-Rivers hypothesized that T3 was the active peripheral thyroid hormone and T4 was its precursor.
(Photo: Tom Tingle/The Republic) U.S. Sen. Jeff Flake may have a long two years ahead of him. Up for re-election in 2018, the first-term Arizona Republican is already under attack from the right and the left.
Representatives only serve a two-year term before they must run for re-election. So, every time the calendar year ends in an even number, all 435 of the U.S. House members are up for reelection again.(Unless, of course, they choose not to run for reelection.).ll of them. Representatives only serve a two-year term before they must run for re-election. So, every time the calendar year ends in an even number, all 435 of the U.S. House members are up for reelection again. (Unless, of course, they choose not to run for reelection.).