a, Schematic of the experimental design.
b, Flow cytometry of CD4+ T cells (gated on
CD4+TCR-β+) stained
intracellularly for IL-17a and RORγt. Mononuclear cells were
collected from colons of poly(I:C)-treated Jax mothers with/without human
bacteria-gavage. c, Representative SEM images of epithelial
surfaces in the ilea from 2 independent experiments. d-e, Total
interaction time (d), and total distance traveled
(e) during the sociability test of adult offspring
described in (a) (n=23/22/13 for
vehicle-gavaged only/human bacteria-gavaged+isotype control
antibody/human bacteria-gavaged+anti-IL-17a antibody; 4 independent
experiments). f-g, Quantification of SATB2+
cells (n=5/group) and cortical patch size
(n=7/6/5 (poly(I:C);vehicle-treated Jax/human
bacteria-gavaged Jax with isotype control antibody/human bacteria-gavaged
Jax with anti-IL-17a antibody). *p<0.05 as
calculated by one-way (d, e, g) and two-way (f)
ANOVA with Tukey post-hoc test. Graphs indicate mean +/−
s.e.m.