Fig. 5From: Analyzing chemical changes in verdigris pictorial specimens upon bacteria and fungi biodeterioration using voltammetry of microparticlesSecondary electron image obtained in: a EO@BLANK showing cracks (arrow) and a microsphaeroidal feature (asterisk), b EO@An showing pores and aggregates of microcrystals (arrow); c EO@Ao showing irregular features presumed to be associated to the formation of copper complexes (arrow)Back to article page