Fig. 1

Solid-phase extraction of NanoHSA using Sep-Pak® cartridge. Colloidal [99mTc]TcO2 and [99mTc]Tc-NanoHSA were retained on Sep-Pak® cartridge enabling further TLC analysis of soluble hydrophilic impurities in fraction A
Solid-phase extraction of NanoHSA using Sep-Pak® cartridge. Colloidal [99mTc]TcO2 and [99mTc]Tc-NanoHSA were retained on Sep-Pak® cartridge enabling further TLC analysis of soluble hydrophilic impurities in fraction A