Figure 6

Detection of CTLA4 by poly-protein G cell-based competition ELISA. Graded concentrations of CTLA4 were measured by (○) an 8pG cell-based microplate, (●) a traditional polystyrene-based microplate, (▲) a commercial protein G-based microplate, and (▼) a 3T3 cell-based microplate. The mean absorbance values (405 nm) of duplicate determinations are shown. Bars, SD.