1. Antibody Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
2. Advanced Biomedical Computational Science, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
3. Protein Characterization Laboratory, Cancer Research Technology Program, Frederick National Laboratory for Cancer Research, Frederick, MD 21701, USA
4. Current address: The Center for Cell Clearance, University of Virginia, Charlottesville, VA 22908, USA
5. Department of Pathology, University of Virginia School of Medicine, Charlottesville, VA 22908, USA