Fig. 2From: EphA2-specific microvesicles derived from tumor cells facilitate the targeted delivery of chemotherapeutic drugs for osteosarcoma therapyCharacterization of YSA-SPION and YSA-SPION-MV. The A FT-IR spectrum and B particle size distribution of YSA-SPION. C Representative TEM images of SPION (scale bars: 1 μm, 200 nm, 100 nm). D Particle size distribution of reaction systems with different component ratios. E Representative TEM images of YSA-SPION-MV (scale bars: 1 μm, 200 nm)Back to article page