Fig. 4From: Plant cell wall hydrolysis process reveals structure–activity relationshipsTime-course AFM topography, amplitude, and recognition images of mutant Populus cell walls, hydrolyzed by EG (image size: 2 × 1.2 μm2). Images show cell wall structures before enzyme hydrolysis and at 30, 60, 90, 120, and 175 min after addition of EGBack to article page