![Neurosteroids: Deficient cognitive performance in aged rats depends on low pregnenolone sulfate levels in the hippocampus]()
Neurosteroids: Deficient cognitive performance in aged rats depends on low pregnenolone sulfate levels in the hippocampusVallee, M.; Mayo, W.; Darnaudery, M.; Corpechot, C.; Young, J.; Koehl, M.; Le Moal, M.; Baulieu, E.-E.; Robel, P.; Simon, H. · Proceedings of the National Academy of Sciences · 1997