Contents
Vol 284, Issue 5412
Contents
This Week in Science
Editorial
NetWatch
Departments
News of the Week
ScienceScope
Random Samples
News Focus
Letters
Books
Policy Forum
Perspectives
Review
Reports
Technical Comments
COVER The IkB kinase (IKK) complex is responsible for triggering inflammatory responses. However, gene ablation expriments have identified an unexpected function for the IKKa subunit of this complex-control of epidermis formation. Sections of epidermis (~30 mm tall) from normal (top) and IKKa-deficient mice (bottom) stained to visualize nuclei (purple) and nondifferentiated cells (red) reveal the marked expansion of nondifferentiated cells in mutant epidermis. See page 316. [Image: Y. L. Hu]