Fig. 2From: Detection of thioredoxin-1 using ultra-sensitive ELISA with enzyme-encapsulated human serum albumin nanoparticleCharacteristics of HEHPA. a and b TEM image of HEHPA nanoparticles (inset shows a high-resolution TEM image of randomly selected HEHPA nanoparticles), c DLS data of HEHPA nanoparticles and d zeta-potential value of each nanoparticle (n = 4) to show each component conjugated on surface of HEHBack to article page