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Chronic pain
Chronic pain was originally defined as pain that has lasted 6 months or longer. It is now defined as pain that persists longer than the normal course of time associated with a particular type of ... > more -
Peptic ulcer
A peptic ulcer is an ulcer of one of those areas of the gastrointestinal tract that are usually acidic. A more general term, peptic ulcer disease (PUD), is also in use. Most ulcers are associated ... > more -
Epstein-Barr virus
The Epstein-Barr virus (EBV), also called Human herpesvirus 4 (HHV-4), is a virus of the herpes family (which includes Herpes simplex virus and Cytomegalovirus), and is one of the most common viruses ... > more -
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Palliative care
Palliative care is any form of medical care or treatment that concentrates on reducing the severity of the symptoms of a disease or slows its progress rather than providing a cure. It aims at ... > more -
Flu vaccine
The flu vaccine is a vaccine to protect against the highly variable influenza virus. The annually updated trivalent flu vaccine for the 2005-2006 season consists of hemagglutinin (HA) surface ... > more -
White blood cell
White blood cells (also called leukocytes or immune cells) are cells which form a component of the blood. They help to defend the body against infectious disease and foreign materials as part of the ... > more -
Hepatitis B
Originally known as serum hepatitis, hepatitis B has only been recognized as such since World War II, and has caused current epidemics in parts of Asia and ... > more -
Ionizing radiation
Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries enough energy to ionize an atom or molecule (that is, ... > more -
Radiography
Radiography is the creation of images by exposing a photographic film or other image receptor to X-rays. Since X-rays penetrate solid objects, but are weakened by them depending on the object's ... > more
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