Figure 2From: Protective effect of recombinant staphylococcal enterotoxin A entrapped in polylactic-co-glycolic acid microspheres against Staphylococcus aureus infectionCharacteristics of the PLGA-rSEA. (A) Scanning electron microscopy (SEM) photograph of PLGA-rSEA. Microsphere size, morphology, and surface appearance were examined by SEM. (B) Antigen-release kinetics. Percentage of released antigen was detected by BCA assay from day 10- 50.Back to article page