Percent total volumes of lesion and spared white and gray matters across groups. Bar heights represent means ± standard error of the mean. Spinal cord injury (SCI; white bars), n = 11; SCI+estradiol (SCI+E, light gray bars), n = 7; SCI+dihydrotestosterone (SCI+DHT, medium gray bars), n = 8; SCI+ estradiol and dihydrotestosterone (SCI+E+DHT, dark gray bars), n = 6.