[1] Johns Hopkins Univ, Sch Med, Dept Neurosci, High Throughput Biol Ctr, Baltimore, MD 21205 USA
[2] Johns Hopkins Univ, Sch Med, Johns Hopkins Ion Channel Ctr, Baltimore, MD 21205 USA
[3] Corning Inc, Div Sci & Technol, Corning, NY 14831 USA
[4] US FDA, Ctr Biol Evaluat & Res, Bethesda, MD 20892 USA