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Linear regression between HERVs antibody levels and age of all participants (children and mothers). (a) shows the linear regression between anti-HERV-H and age; (b) shows the linear regression between anti-HERV-K and age; (c) shows the linear regression between anti-HERV-W and age.95% CI, confidence interval fixed at 95%. Statistical significant levels fixed at * p < 0.05.
