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. 2021 Oct 11;6:35. doi: 10.1186/s41181-021-00147-8

Fig. 1.

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