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Acne
Serious skin conditions affect around seven million of people in the UK alone.
They can cause significant emotional distress as well as physical discomfort.
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Clues to cause of long-term pain
Undamaged nerve fibres - not those that are injured - may cause long-term chronic pain, research suggests.
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Disease detectives - always on alert
Killer diseases have no respect for national or political borders.
And, in an increasingly globalised world, there is no certainty about when or where they will strike - whether it is Sars or bird flu - bio-terrorism or natural disaster.
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How DNA works
'The key to life'
DNA's double helix holds the key to life. The secret discovered by Watson and Crick in 1953 is that there are four possible types of rung on the ladder formed by the double helix.
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PREGNANCY: THE FACTS
PREGNANCY - THE FACTS
Timeline: A week by week guide to what happens to mother and baby during pregnancy.
Nine months: An overview
PRE-NATAL: Minor complications &
serious complications
DURING LABOR: Pain relief &
complications of labor
POST-NATAL: Breast vs bottle.
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Structure of HIV
The 3D structure of the virus which causes Aids has been revealed for the first time, scientists say.
The variable size and shape of HIV has made it hard to map, the team said in the journal Structure.
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Why we get high cholesterol
Scientists have found clues to why people develop high cholesterol levels - an important cause of heart disease.
Researchers in the United States have identified a protein which they say plays a key role in determining whether or not fatty substances and cholesterol build up inside the arteries.
