Oligodendrocyte cell numbers recover from early deficits by adulthood (A) At P50, the densities of both tdTom− and tdTom+ mature OLs in the septal corpus callosum of EtOH-exposed animals were not different from the densities of air exposed controls, (p = 0.8767 and p = 0.8414, respectively). (B) Similarly, by P50 the densities of tdTom− and tdTom+ proliferating OPCs were not statistically different between EtOH and air exposed animals, (p = 0.0711 and p = 0.9480, respectively; n = 4–6 per treatment group).