Detection of Receptor Activation in FFPE Specimens Figure 1. Antibody proximity VeraTag assay. A. Assay work-flow. B. Antibody proximity assay design for quantification of receptor and ligand- receptor complex. doi:10.1371/journal.pone.0015932.g001 PLoS ONE | www.plosone.org 2 January 2011 | Volume 6 | Issue 1 | e15932