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SlideshowReport

Hippocampal Volumes of Pairs of Monozygotic Twins

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Description
The graph shows that the size of the hippocampus of twins not exposed to combat was similar to the size of their combat-exposed co-twins whether or not the co-twins had PTSD. These results suggest that hippocampal size is a genetically determined trait that predates the exposure to combat. (Based on data from Gilbertson et al., 2002.)
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