<prompt> Answer this question truthfullyWhat is the significance of the mnemonic LuRKS in the context of aldose reductase and sorbitol dehydrogenase, and what are the tissuesorgans associated with each letter of the mnemonic?  <response>: <reason> The mnemonic LuRKS is used to remember the tissuesorgans that have only aldose reductase no sorbitol dehydrogenase, which is an enzyme involved in the metabolism of glucose. The tissuesorgans associated with each letter of the mnemonic are: L for Lens primarily aldose reductase, u for Retina, K for Kidneys, and S for Schwann cells. Understanding the distribution of aldose reductase and sorbitol dehydrogenase in different tissuesorgans is important for understanding the role of these enzymes in various metabolic processes, and for understanding the pathophysiology of diseases such as diabetic complications. 