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.
Sen. Rand Paul (Ky.) â Paul, who is up for reelection in 2016, looks like a sure bet to run for president. Of all the possible 2016 GOP hopefuls, Paul has arguably had the best 2014.Indiana Gov. Mike Pence â Pence is a dark horse who shouldnât be overlooked.assachusetts Gov. Deval Patrick â Will likely run for president at some point, but not in 2016. Sen. Bernie Sanders â The liberal Sanders, who is technically an independent, has said he would challenge Clinton if no one else from the left launches a bid.