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Studies of the hippocampus as a target of stress and stress hormones have revealed a considerable degree of structural plasticity in the adult brain. Repeated stress causes shortening and debranching of dendrites in the CA3 region of the hippocampus and suppresses neurogenesis of dentate gyrus granule neurons. Both forms of structural remodeling of the hippocampus appear to be reversible and are mediated...
Sprague Dawley (SD), Fischer 344 (F344), and Lewis (LEW) rats are used in a wide variety of laboratory studies. Compared to SD and LEW rats, F344 rats show significantly greater corticosterone secretion in response to stress, or to immune challenge. These strain differences in hypothalamic-pituitary-adrenal (HPA) axis responsivity have been the basis for many comparative studies investigating immunological...
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