29 May 2020
Vol 368, Issue 6494

About The Cover

Cover image expansion

COVER Illustration of bacteria in tissue sections from multiple human tumor types. Bacteria are frequently found in tumors, and different tumor types have distinct microbial compositions, as represented here by the different colors of bacteria. The image also reflects the observed intracellular localization of tumor bacteria, mostly inside cancer and immune cells. Future studies will explore the role of these bacteria in tumor development and treatment response. See pages 938 and 973.
Illustration: V. Altounian/Science