This is the most important transport mechanism in the PCT. The proximal tubule is the portion of the duct system of the nephron leading from Bowman's capsule to the loop of Henle. Structure and appearance The most distinctive characteristic of the proximal tubule is its brush border (or striated border).The luminal surface of the epithelial cells of this segment of the nephron is covered with densely packed microvilli forming a border readily visible under the light microscope.tructure and appearance The most distinctive characteristic of the proximal tubule is its brush border (or striated border). The luminal surface of the epithelial cells of this segment of the nephron is covered with densely packed microvilli forming a border readily visible under the light microscope.
President Barack Obama and Michelle Obama celebrated their 23rd wedding anniversary on Saturday. The two were married on Oct. 3, 1992, at Trinity United Church in Chicago. A year later, Michelle apparently forgot the couple's first wedding anniversary. First lady Michelle Obama and President Barack Obama have been married for over two decades. Over time, Michelle has said that she has learned to forgive some of the president's habits.
Upon the vote of the Electoral College on December 15, 2008, and the subsequent certification thereof by a Joint Session of the United States Congress on January 8, 2009, Barack Obama was elected President of the United States and Joe Biden Vice President of the United States, with 365 of 538 electors.