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. Author manuscript; available in PMC: 2015 Aug 1.
Published in final edited form as: Adv Healthc Mater. 2014 Mar 20;3(8):1272–1282. doi: 10.1002/adhm.201300696

Figure 4.

Figure 4

Figure 4

Figure 4

Lack of effect of gravity on delivery of polystyrene microparticles in the rabbit eye in vivo (cornea facing up). (a) Distribution of almost-neutral density (1.05 g-cm-3), 32 μm-diameter polystyrene microparticles after injection into the rabbit eye showing no preferential movement relative to gravity. (b) Distribution of high-density (1.92 g-cm-3), 35 μm PEDs after injection into the rabbit eye showing gravity-mediated localization to the back of the eye. (c) Distribution of particles away from ciliary body and (d) radial distribution of particles away from the injection site (at superior “12-o'clock” position) for polystyrene microparticles and PEDs. The arrow indicates the injection site. Asterisk (*) indicates statistical significance between polystyrene microparticles and PEDs. Data shown as average ± standard deviation (n = 3).