In mathematics, the Fibonacci numbers or Fibonacci series or Fibonacci sequence are the numbers in the following integer sequence: (sequence A000045 in OEIS) By definition, the first two numbers in the Fibonacci sequence are 0 and 1, and each subsequent number is the sum of the previous two.
Tight Junctions. Tight junctions are found predominantly in epithelial tissues, such as intestinal brush border. Water and other fluids must be prevented from leaking between adjacent cells, so that body fluids do not gradually seep across the intestinal lining.
Tight junctions hold cells together in a sheet, restricting the movement of substances between the cells. Tight junctions are found in cells that line the digestive tract. 2--Adherens junction. Adherens junctions are anchoring junctions that use integrin to hold cells together by anchoring to the cells' actin networks.Adherens junctions, as other anchoring junctions are found in tissues that are subject to mechanical stress such as muscle and epithelium.esmosomes are anchoring junctions that use cadherin to hold cells together by anchoring to the cells' actin networks, or for more stable cell-to-cell connections by anchoring to the cells' intermediate fibers.