Grape seed extract effects on hippocampal neurogenesis, synaptogenesis and dark neurons production in old mice. Can this extract improve learning and memory in aged animals? - Rastegar-moghaddam, Seyed Hamidreza; Bigham, Maryam; Hosseini, Mahmoud; Ebrahimzadeh-bideskan, Alireza; Malvandi, Amir Mohammad; Mohammadipour, Abbas (Nutritional Neuroscience, 2022)