Mechanism of Action. Levocetirizine, the active enantiomer of cetirizine, is an anti histamine; its principal effects are mediated via selective inhibition of H1 receptors. The antihistaminic activity of levocetirizine has been documented in a variety of animal and human models. In vitro binding studies revealed that levocetirizine has an affinity for the human H1-receptor 2-fold higher than that of cetirizine (Ki = 3 nmol/L vs. 6 nmol/L, respectively).
Backcountry Splitboarding in Oregon and Beyond! Bend Glacier. The Bend Glacier is the largest of Broken Topâs two named glaciers, and is located on the north/northeast side of the mountain. Itâs meltwater feeds the headwaters of Squaw Creek, which eventually empties into the Deschutes River.
The world's longest glacier is the Lambert-Fisher glacier at an icy 320 miles in length and a not-so-hot 25 miles in width.   The Lambert-Fisher glacier is a speed de â¦ mon as far as slow moving masses of ice go, moving over a half mile each year.   The world's longest glacier is the Lambert-Fisher glacier at an icy 320 miles in length and a not-so-hot 25 miles in width.   The Lambert-Fisher glacier is a speed demon as far as slow moving masses of ice go, moving over a half mile each year. 1 person found this useful. Answered.