Fig. 3From: Novel nanotherapeutics for cancer immunotherapy by albumin nanoparticles functionalized with PD-1 and PD-L1 aptamersCharacterization of the nanoparticles. The average size (left panel) and zeta potential (right panel) of the NPs: A plain NP, B PD1-NP, C PDL1-NP, and D PD1-NP-PDL1Back to article page