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. Author manuscript; available in PMC: 2023 May 5.
Published in final edited form as: Transfus Med Rev. 2022 Sep 24;36(4):195–203. doi: 10.1016/j.tmrv.2022.09.002

Fig. 2.

Fig. 2.

Serum C3a and C4a levels in 17 patients with primary APS, 9 patients with non-systemic SLE connective tissue diseases and 15 healthy volunteers, as reported by Oku et al.36 Low C3/C4 and normal C3/C4 refers to the levels of C3 of C4 in the plasmas being assessed, since some patients with APS were found to have hypocomplementemia.