Fig. 6From: Preparation, characterization and immunological evaluation: canine parvovirus synthetic peptide loaded PLGA nanoparticles2-Dimensional (a and c) and deflection (b and d) AFM image of nanoparticles after 30Â days (a and b) and 60Â days (c and d) incubation in PBS at pHÂ 7.4Back to article page