Atherosclerosis is a disease of the arteries in which fatty material is deposited in the vessel wall, resulting in narrowing and eventual impairment of blood flow. Severely restricted blood flow in the arteries to the heart muscle leads […]

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An atrial septal defect is a congenital heart defect where the wall between the right and left atria does not close properly, leaving a hole between the two atria. Atrial septal defect (ASD) is a congenital birth defect. […]

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Definition Avian influenza is a strain of influenza (sometimes called "the flu", "Bird Flu") that infects birds. In particular, ducks, geese, and chickens may become infected with avian influenza. In Asia, there have been cases of avian influenza that […]

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