Quantitative comparison of expression with adeno-associated virus (AAV-2) brain-specific gene cassettes. - Xu, R; Janson, C G; Mastakov, M; Lawlor, P; Young, D; Mouravlev, A; Fitzsimons, H; Choi, K-L; Ma, H; Dragunow, M; Leone, P; Chen, Q; et al. (Gene Therapy, 2001)