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. Author manuscript; available in PMC: 2010 Dec 1.
Published in final edited form as: Nat Nanotechnol. 2010 Apr 11;5(6):465–472. doi: 10.1038/nnano.2010.58

Figure 4. Doxorubicin release in cylindroids.

Figure 4

a–c, Red fluorescence images and the corresponding radial intensity profiles of cylindroids treated with positive Dox-AuNP (a), negative Dox-AuNP (b) and free Dox (c). Dotted circles indicate cylindroid edges. Scale bars are 200μm. d and e, Ratio of average fluorescence intensities in the outer region to those in the inner region of cylindroids, 30 hours after treatment (d) and as a function of time (e). Errors are standard error of the mean, and significance was determine using Student’s t-test (*, P<0.05; n=3).