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. Author manuscript; available in PMC: 2012 May 24.
Published in final edited form as: ACS Nano. 2011 May 3;5(5):3438–3446. doi: 10.1021/nn1019779

Figure 1.

Figure 1

Conceptual schematic of MnO encapsulation in PLGA, followed by release of Mn2+ in low pH. This results in increased r1, leading to enhancement in MRI. The In Vitro experiment is a mimic of lysosomal uptake of particles by cells.