Difei Qiu

C‐terminal lysine variants in fully human monoclonal antibodies: Investigation of test methods and possible causes

Lawrence W. Dick, Difei Qiu, David Mahon et al. · Biotechnology and Bioengineering · 2008 · 156 citations

Immunocytochemical Technique, Immunology, Pathology +19

Determination of the origin of the N‐terminal pyro‐glutamate variation in monoclonal antibodies using model peptides

Lawrence W. Dick, Catherine Kim, Difei Qiu et al. · Biotechnology and Bioengineering · 2006 · 125 citations

Peptide mapping of therapeutic monoclonal antibodies: Improvements for increased speed and fewer artifacts

Lawrence W. Dick, David Mahon, Difei Qiu et al. · Journal of Chromatography B · 2008 · 76 citations

Systems Biology, Immunocytochemical Technique, Autoimmune Disease +15

Investigating the Degradation Behaviors of a Therapeutic Monoclonal Antibody Associated with pH and Buffer Species

Songyan Zheng, Difei Qiu, Monica Adams et al. · AAPS PharmSciTech · 2015 · 38 citations

Immunocytochemical Technique, Biochemistry, Bioanalysis +10

A simple reversed phase high-performance liquid chromatography method for polysorbate 80 quantitation in monoclonal antibody drug products

Michael Adamo, Lawrence W. Dick, Difei Qiu et al. · Journal of Chromatography B · 2010 · 34 citations

Medicinal Chemistry, Engineering, Polysorbate 80 +11