Fig. 2a,b.

Relationship between values of antiprothrombin antibody and antiphosphatidylserine/prothrombin antibody in sera of patients with systemic lupus erythematosus. The values of antiprothrombin antibody and antiphosphatidylserine/prothrombin antibody in patients with systemic lupus erythematosus were compared. For comparison, the values of antiprothrombin antibody and β2-glycoprotein I-dependent anticardiolipin antibody were also compared. a Antiprothrombin antibody and antiphosphatidylserine/prothrombin antibody. ρ = 0.514, P < 0.0001 by Spearman’s rank correlation. b Antiprothrombin antibody and β2 glycoprotein I-dependent anticardiolipin antibody. ρ = 0.086, P = 0.3103 by Spearman’s rank correlation. aPT-A, antiprothrombin antibody measured using high binding plates; aPS/PT, antiphosphatidylserine/prothrombin antibody; aβ2GPI/CL, β2 glycoprotein I-dependent anticardiolipin antibody