Hunter S, Weiss S, Ou CY, Jaye D, Young A, Wilcox J, Arbiser JL, Monson D, Goldblum J, Nolen JD, Varma V. Apolipoprotein D is down-regulated during malignant transformation of neurofibromas. Hum Pathol. 2005 Sep; 36(9):987-93.