Signaling pathways triggered by the mother’s immune system may cause complications during fetal development.

Study of 81 six-week-olds who were born by C-section or vaginal delivery didn’t show differences in the structure or function of their microbiota, despite contrary results from other studies on babies. 

The maternal gut microbiome guides neo- and postnatal immune system development, a mouse study shows. 

The animal world is full of clever solutions to bioengineering challenges.

Meet some of the people featured in the August 2015 issue of The Scientist.