LiveScience.com Lactose intolerance is the inability to digest the main sugar found in milk and other dairy products. This is caused by a deficiency of lactase, the enzyme responsible for metabolizing lactose in the small intestines. The prevalence of lactose ... in ... and more »
Ottawa Citizen When she stopped breathing is the only time you can't prepare yourself for. But you ... The genetic disease is characterized by the absence of an enzyme , sphingomyelinase, which normally breaks down a fatty substance known as sphingomyelin. Without the ...
