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Human cloning licence awarded to Dolly creator
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DNA vaccine offers hope against tuberculosis
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Sex hormones plunge in downtrodden females
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Teen sex abstinence study sparks controversy
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Hormone shots could cut many premature births
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Unusual Arctic cold raises fears for ozone hole
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AIDS treatment in developing world accelerates
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Younger siblings cut multiple sclerosis risk
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Up to 140,000 heart attacks linked to Vioxx
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Largest iceberg on Earth runs aground
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Earth
Worst post-tsunami health fears recede
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Sudan polio outbreak jeopardises eradication plan
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