DCX and hydrops fetalis: Others found that neurogenesis occurs during adulthood and that the number of DCX-positive cells and the neuronal turnover rates (from the self-renewing fraction of HF neurons) present an insidious parallel decline along basal values (Knoth et al., 2010; Spalding et al., 2013), correlating with the neurogenic capacity of the DG (Spalding et al., 2013).