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. 2021 Nov 30;219(1):e20212207. doi: 10.1084/jem.20212207

graphic file with name JEM_20212207_Fig2.jpg

Helminth regulation of the host intestinal epithelium: A cost–benefit analysis. H. polygyrus produces HpES that modulates the host small intestinal epithelium in mice. HpES acts on intestinal stem cells (ISCs) to suppress tuft cell hyperplasia and cause the emergence of a fetal-like state. This modulation has potential costs and benefits for both host and parasite.