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1.
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FAQ042
What happens during puberty?
When puberty starts, your brain sends signals to certain parts of the body to start growing and changing. These signals are called hormones. Hormones make your body chan...
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March 2013
PDF Format
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2.
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FAQ167
What is human papillomavirus (HPV)?
Human papillomavirus (HPV) is a virus that can be passed from person to person through skin-to-skin contact. More than 100 types of HPV have been found. About 30 o...
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August 2011
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