Task: Answer Verification
Input (English): Question: Does lactoferrin conjugated with 40-kDa branched poly ( ethylene glycol ) have an improved circulating half-life?
Answer: The 40k-PEG-bLf exhibited improved in vitro bioactivity and stability and enhanced pharmacokinetic properties as compared to those of the unmodified bLF and the 20 k-PEG-bLf conjugate, which was recently developed by PEGylation of bLF with a 20-kDa branched PEG [Nojima Y. et al. Bioconjugate Chem. 19:2253-2259 (2008)].
Output (English): yes