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.
Five women represent Republicans as senators in the 115th Congress, running from 2017 through 2019. The number is one fewer than for the previous Congress as New Hampshire's Kelly Ayotte lost re-election by only about 1,000 votes. Alaska: Lisa Murkowski. First Elected: 2004 (Appointed in 2002 to fill a vacancy) Next Election: 2022