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My 1,000
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Researchers from the Massachusetts of Technology have found a gene in mice. It could help people with memories forget bad experiences. It could help soldiers, victims and people who survived natural . Many of these people have memories that make them very . They have an called post-traumatic stress (PTSD). Scientists hope to use their research to erase painful memories in . They want to replace stressful memories with positive thoughts and feelings. This would help of people with PTSD.

Scientists did tests to make mice forget their . They put the mice into a and gave them shocks. After many shocks, the mice were stressed and afraid of the cage. After the mice had "cage shock," the put the mice in the cage again but with no electric shock. After some , the mice no feared the cage. Their stress and fear changed to good . The scientists looked at the brain of the mice. They were surprised to find the gene that replaced memories with new ones. They will now try to find this gene in human .

 
 

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