Figure 4From: Efficient production of single-chain fragment variable-based N-terminal trimerbodies in Pichia pastoris Serum stability of MFE-23 N purified from P. pastoris or HEK-293 cells. ELISA against plastic immobilized CEA (A) and western blot (B) were performed after incubation at 37°C for different time periods in human serum, as indicated in material and methods.Back to article page