Volume 572 Issue 7771



Geologist’s sacking prompts outcry p.574

Researchers say that Irina Artemieva’s dismissal from the University of Copenhagen runs counter to international academic standards.

doi: 10.1038/d41586-019-02461-3

News Features

News & Views

Macrophages form a protective cellular barrier in joints p.590

Inflammation and the repair of damaged tissues are regulated by immune cells called macrophages. The finding that they form a layer that shields mouse joints from damage has implications for the treatment of arthritis.

doi: 10.1038/d41586-019-02340-x

What makes flatworms go to pieces p.593

Flatworms called planarians can break off fragments of themselves that regenerate to form new, complete worms. The molecular cues that regulate the frequency of such fission events have been revealed.

doi: 10.1038/d41586-019-02376-z