Fig. 1.

Outline of the problem and experimental approach. Factors contributing to childhood undernutrition are marked with red arrows. Enteric infection can lead to gut dysfunction that makes reinfection more likely, a condition known as environmental enteropathy. Undernourished children are stunted, which is defined by a HAZ score < −2. The red dots on the HAZ scale correspond to scores of children at 1 y of age whose data were analyzed. Genome-wide maps of H3K4me3 were obtained using PBMCs from children at 18 wk and 52 wk of age, as well as their mothers.