Figure 1: Impact of nGO and nGO-PEG on macrophage behaviour.
From: PEGylated graphene oxide elicits strong immunological responses despite surface passivation
(a) Internalization of nGO and nGO-PEG observed by confocal imaging (purple dots, marked with white arrows: nGO complexes). Scale bar: 5 μm. (b) Flow cytometric dotplots of cytokine stimulation induced by nGO over 24 h. (c) Histogram of total cytokine concentrations as a function of time. Each cytokine concentration column is displayed as the mean value of three replicas. (d) Cytokine secretion induced by nGO-PEG at different concentrations after 24 h coincubation. Dosages in a–c were fixed at 10 μg ml−1. Data are presented as means±s.d., with n=3.
