Not to be confused with Retinal. Retinol, also known as Vitamin A1, is a vitamin found in food and used as a dietary supplement. As a supplement it is used to treat and prevent vitamin A deficiency, especially that which is resulting in xerophthalmia.
Desmosomes are anchoring junctions â mechanical couplings scattered like rivets along the sides of adjacent cells to prevent their separation. On the cytoplasmic face of each plasma membrane is a thickening called a plaque.
Making the world better, one answer at a time. 1. Tight Junctions = tight, zipper-like junctions between cells; prevent intercellular passage of materials; 2. Desmosomes = anchoring junctions that hold adjacent cells together; 3. Gap Junctions = communicating (transport) channels between adjacent cells.