A sample of squamous cell lung cancer.Image courtesy of the National Cancer Insitute.
Double agents: Researchers set out to explore how seemingly harmless normal cells may help cancer cells evade chemotherapy. Image courtesy of Steven H. Lee/graphiko.com
A breast cancer cell, shown in a color-enhanced scanning electron micrograph.Image courtesy of Anne Weston via Wellcome Images
The cover art for Nature suggests a microbial reflection of one’s self in dialogue with its host, as in the original painting titled "Our Self-Portrait: the Human Microbiome" by Joana RicouIllustration by Steven H. Lee