Reporter gene assay for the quantification of the activity and neutralizing antibody response to TNFα antagonists. by Lallemand, C, Kavrochorianou, N, Steenholdt, C, Bendtzen, K, Ainsworth, M, Meritet, J, Blanchard, B, Lebon, P, Taylor, P, Charles, P, Alzabin, S, Tovey, MG