1. Pegylated interferons
Umaprasanna S Karnam, MD, K.Rajender Reddy, MD 
Clinics in Liver Disease 
Volume 7, Issue 1, Pages (February 2003)
DOI: /S (02)

2. Fig. 1
Chemical structures of some representative polyethylene glycol molecules. [MPEG, monomethoxypoly (ethylene glycol)].
Clinics in Liver Disease 2003 7, DOI: ( /S (02) )

3. Fig. 2
Effects of pegylation on half-life and antiviral activity. As the molecular weight of the attached PEG moiety increases, the antiviral activity decreases, but the serum half-life increases.
Clinics in Liver Disease 2003 7, DOI: ( /S (02) )