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41. We thank N. C. Harata for help with high-frequency
imaging and data analysis, R. J. Reimer and members of the
Tsien lab for comments, J. W. Mulholland and J. J. Perrino
for help with imaging, and X. Gao and M. Bruchez for
consultation on quantum dots. Supported by grants from
the Grass Foundation (Q.Z.), the National Institute of Mental
Health, and the Burnett Family Fund (R.W.T.).
Supporting Online Material
Materials and Methods
Figs. S1 to S9
20 October 2008; accepted 27 January 2009
Published online 12 February 2009;