Kessler, M., Hoffmann, K., Fritsche, K., Brinkmann, V., Mollenkopf, H.-J., Thieck, O., et al. (2019). Chronic Chlamydia infection in human organoids increases stemness and promotes age-dependent CpG methylation. Nature Communications, 10(1): 1194. doi:10.1038/s41467-019-09144-7.