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.
FOUR MORE YEARS? â Walker fundraising email hints at 2018 reelection run: Wisconsin Gov. Scott Walker indicated he would run for reelection in 2018 in a fundraising email on Monday. Our re-election campaign may seem like a long way off but the other side is already gearing up for a bruising battle, Walker wrote. Walker, whose approval ratings sank in his state as he ran for president, has already won three governor's races: his initial victory in 2010, a 2012 recall, and his 2014 reelection.