Fig. 1

Fetal intestinal cell measures refute the presence of technical batch effects. Proportion of a PLZF⁺ CD161⁺, b PLZF⁺ CD161⁻ T cells among live, TCRβ⁺, Vα7.2⁻, CD4⁺ cells and c mucosa-associated invariant T cells (MAITs; CD161⁺ among live, TCRβ⁺, Vα7.2⁺ cells) in intestinal lamina propria (left) or mesenteric lymph node (MLN, right). t-test for significance, where each dot is a biologically independent fetal sample. d Diameter (μm) and e average structure diameter (μm) of bacterial-like morphologies in meconium, epithelial cells, and red blood cells as detected by scanning electron microscopy across up to four biologically independent fetal samples. Each dot represents a cell structure in (d) and a fetal sample in (e) One-way ANOVA with Tukey’s test for multiple comparisons was used to calculate significance in (e)