Figure 2

An example of interaction between sex and environment in determining the structure of brain features. A. Golgi impregnation of apical dendrites in area CA1 of the hippocampus of male and female rats that did or did not undergo 15 minutes of stress 24 hours before their brains were removed (The pictures were received from Prof. Tracey J. Shors and are from the study reported in Figure 3 in [31]). B. The mean and standard error of the mean density of apical and basal dendritic spines on pyramidal cells in area CA1 of the hippocampus of male and female rats that did or did not undergo 15 minutes of stress 24 hours before their brains were removed. Significant differences are marked with asterisks (adopted with permission from Figure 4 in [31]).