gp46 IFA. Samples of all the experimental conditions described in this article were collected on day 4 for IFA analysis. (A-D) CC; (E-H) TPS; (I-L) TS; and (M-P) PS. Incubations were performed with: PBS as negative control for the FITC-conjugated anti-mouse IgG secondary antibody (A, E, I, M); monoclonal anti-rabbit complement factor H primary antibody negative control (B, F, J, N); SIM110 monoclonal anti-SLA as positive control (C, G, K, O); and monoclonal anti-gp46 (D, H, L, P). As a summary, gp46 is expressed under CC, TS and PS but not in TPS-treated AL.