Contents

15 November 2019
Vol 366, Issue 6467

About The Cover

Cover image expansion

COVER Stylized view of the cell to illustrate that the nucleus exports RNA messages that are translated into proteins (blue) by ribosomes. Proteasomes and lysosomes degrade and recycle internalized, aberrant, or excess proteins. The endoplasmic reticulum and Golgi complex package and sort cargoes for transport to other organelles or for export from the cell. Mitochondria provide power to the rest of the cell. For more on cellular quality control, see page 816.
Illustration: Nigel Sussman