Correlation of induced regulatory T cells (iTreg) between cord blood of children and maternal peripheral blood of their mothers. Characteristics of Treg cells in cord blood of male (n = 76) and female (n = 86) children of healthy (n = 80) and allergic (n = 82) mothers were measured using flow cytometry and correlated with characteristics in maternal peripheral blood, utilizing Pearson’s correlation coefficient. (a) Correlation between Helios− iTreg in cord blood of children and peripheral blood of their mothers. r = 0.2923, p = 0.0002. (b) Correlation between Helios− iTreg in cord blood of children and peripheral blood of healthy and allergic mothers. r = 0.3825, p = 0.0005 for healthy mothers, r = 0.2249, p = 0.0423 for allergic mothers. (c) Correlation between Helios− iTreg in cord blood of male and female children and peripheral blood of their mothers. r = 0.2591, p = 0.0238 for male children, r = 0.2933, p = 0.0061 for female children.