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(A) Enzymatic activity versus storage time at 4°C for ASNase control, monoPEG-ASNase and polyPEG-ASNase. (B) Dynamic light scattering profiles of unreacted ASNase, mono and polyPEGylated ASNase. The hydrodynamic radius were 7.53 nm, 9.85 nm and 11.75 nm, respectively.
