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Tissue response after 4 days to injection of AA-6 nanogels of different sizes at the sciatic nerve (a) AA-6L, particle size = 840 nm; (b) AA-6M, particle size = 265 nm; (c) AA-6S, particle size = 100 nm. Arrows point to the residual nanogel deposit/inflammatory complex. The inset to (a) is the cross-section of the inflammatory capsule shown in panel (a).
