Genes and Disease is a collection of articles that discuss genes and the diseases that they cause. These genetic disorders are organized by the parts of the body that they affect. As some diseases affect various body systems, they appear in more than one chapter. With each genetic disorder, the underlying mutation(s) is discussed, along with clinical features and links to key websites. The contents include: blood and lymph diseases; cancers; the digestive system; ear, nose, and throat; diseases of the eye; female-specific diseases; glands and hormones; the heart and blood vessels; diseases of the immune system; male-specific diseases; muscle and bone; neonatal diseases; respiratory diseases; nutritional and metabolic diseases and much more.