Featured image: Functional pathways transcriptionally altered by Chlamydia trachomatis in response to short-term iron starvation. Association networks were generated with STRING-db v.10.5. Upregulated transcripts are displayed in green and downregulated transcripts in red. [See related article: A. J. Brinkworth et al., mSystems 3(1):e00184–17, 2018.] Copyright © 2018 Brinkworth et al. This content is distributed under the terms of the Creative Commons Attribution 4.0 International license.