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Laparoscopy is a surgical technique in which a lighted viewing instrument (laparoscope) is inserted into the lower abdomen through

A laser is a highly focused beam of light that is used to cut or destroy tissue during a medical procedure. Laser light cleans

LDL (low-density lipoprotein) is sometimes called "bad" cholesterol. A high LDL cholesterol level can raise your risk for coronary

Exposure to lead paint (lead-based paint), which was widely used in many homes and apartments before 1978, can damage the body's

Lead poisoning is the name given to the harm caused by too much lead in the body, usually from months or years of exposure to

Legionnaires' disease is an infection of the lungs (pneumonia) caused by a type of bacteria called Legionella pneumophila. People

Labyrinthitis is inflammation of the structures of the inner ear. It can be caused by a viral or, less commonly, a bacterial

The lymph system is a network of vessels and organs throughout the body. This network carries a fluid that contains special white

Let-down is the process by which milk is released from the milk glands to the milk ducts in preparation for breastfeeding. When a

Leukemia is a type of cancer that happens when cells in your bone marrow become leukemia cells. Over time, these cells crowd out