- Apolipoprotein E synthesis in neurofibrosarcoma and schwannoma cell cultures from two individuals with neurofibromatosis. Gebicke-Haerter, P.J., Darby, J.K., Shooter, E.M., Riccardi, V.M., Weisgraber, K.H., Boyles, J.K., Mahley, R.W. Exp. Neurol. (1987)