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Unhealthy meals can lead to obesity, which in turn can cause other diseases. Obesity has increased and will continue to increase in the coming years, but we can help prevent it. What additional factors, apart from diet, are involved?

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What role does HIV drug resistance have in current treatments? Can this resistance be passed from one individual to another? Laboratories are looking for new drugs which act on the different stages of the replication cycle.

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What does current research into an HIV vaccine look like? In this video, scientists explain the characteristics a vaccine would need to have in order to be effective against HIV, and why that is not so simple. A similar vaccine could be used to combat other infectious diseases.

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What is HIV? What does its replication cycle look like? How is it transmitted? This video will provide the answers to these questions, and will give you information on the number of people affected, the different phases of the illness, groups at risk and the reasons why the figures for new infections are rising in groups which are theoretically not at risk.

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How would you like to enter this virtual laboratory and carry out a biopsy on skin tissue using the right surgical materials? Afterwards you'll be able to check if the tissue is cancerous. You'll discover all about the different treatments for melanoma and the characteristics of suspicious moles.