From: Long-term persistence and effects of fetal microchimerisms on disease onset and status in a cohort of women with rheumatoid arthritis and systemic lupus erythematosus
1 son
≥2 sons
1RA patients MC+
7 (63.6%)
4 (36.2%)
1RA patients MC-
47 (82.5%)
10 (17.5%)
Total RA patients
54 (79.4%)
14 (20.6%)
2SLE patients MC+
3 (60%)
2 (40%)
2SLE patients MC-
10 (91%)
1 (9%)
Total SLE patients
13 (81%)
3 (19%)