Figure 5From: Characterization and applications of Nanobodies against human procalcitonin selected from a novel naïve Nanobody phage display librarySPRi binding assay. Affinity between PCT and the three Nbs was determined by SPRi binding assay. (A) Nb1, (B) Nb2 and (C) Nb3 were immobilized on the chip surface and PCT in PBST were injected at the concentrations of 9.7, 29.2, 87.6 and 263 nM.Back to article page