PL binding activities of the purified CIC monoclonal IgG Abs.

Monoclonal Abs were tested for their reactivities with 2 anionic PLs, CLs, and PSs and with a neutral PL, PC. Protein A–purified human IgG (cont IgG) was used as the negative control. Protein A–purified plasma IgG from patient CIC (seric IgG) was used as positive control. The results are expressed as OD at 492 nm minus background (mean ± SE of 2 experiments).