Prevention of kidney stones may include a combination of lifestyle changes and medications. Lifestyle changes. You may reduce your risk of kidney stones if you: Drink water throughout the day. For people with a history of kidney stones, doctors usually recommend passing about 2.6 quarts (2.5 liters) of urine a day.
Melanin is the pigment that gives your skin its color, and it is produced in specialized skin cells called melanocytes. The darker your skin is, the more melanin these cells produce. They can be found deep in the epidermis, close to the basement membrane.
The cells of multicellular organisms become specialized for  particular tasks and communicate with one another to maintain  homeostasis. Specialized cells in multicellular o â¦ rganisms are  organized into groups. A tissue is a group of similar cells that  performs a particular function. + 5 others found this useful.