Fig. 4From: Comparative in vitro toxicity of a graphene oxide-silver nanocomposite and the pristine counterparts toward macrophagesProduction of reactive oxygen species after exposure of J774 tumoral macrophages to the nanomaterials. Percentage of fluorescence relative to control (cells without the presence of nanomaterials) after exposure for 30 and 180 min in the short-term assessment, as well as after 24 and 48 h in the long-term assessment. The fluorescence was normalized according to the number of viable cellsBack to article page