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SlideshowReport

Hippocampal Volumes of Pairs of Monozygotic Twins

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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