title: RESPONSE: Re: Folylpolyglutamyl Synthetase Gene Transfer and Glioma Antifolate Sensitivity in Culture and In Vivo.
authors.affiliation: M. Aghi, X. O. Breakefield, Molecular Neurogenics Unit, Department of Neurology, Massachusetts General Hospital, Boston, MA, and Program in Neurosciences, Harvard Medical School, Boston.
authors.initials: M
authors.lastname: Aghi
authors.initials: CM
authors.lastname: Kramm
authors.initials: XO
authors.lastname: Breakefield