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| IgG1 | IgG2 | IgG3 | IgG4 | |
|---|---|---|---|---|
| Children versus NHD | <0.0001 | n.s. | <0.0001 | n.s. |
| Children versus PAPS | <0.0001. | n.s. | <0.001 | n.s. |
| Children versus SAPS | <0.001 | n.s. | <0.001 | n.s. |
| APS versus NHD | n.s. | n.s. | n.s. | n.s. |
| PAPS versus SAPS | n.s. | n.s. | n.s. | n.s. |
OD = optical density 450 nm; PAPS = primary antiphospholipid syndrome; SAPS = secondary antiphospholipid syndrome; APS = PAPS and SAPS; NHD = normal healthy donors; n.s. = not significant.
