In June 2022, the U.S. Food and Drug Administration (FDA) approved the first Janus kinase (JAK) inhibitor to treat unsegmented vitiligo, the most common type of the condition, in people 12 and up.

Antisegmentalists generally argued either that the vertebrate ancestors never had any mesodermal segmentation anteriorly or that they lost it before the origin of the vertebrates; in either case, the ...

This month's Genome Watch describes the discovery of a segmented RNA virus that provides an evolutionary link between segmented and unsegmented genomes. This month's Genome Watch describes the ...

What is it? Pat Normile This is a thunderworm, an unsegmented worm that is unrelated to earthworms. It can be up to 50cm long and appears suddenly overnight after wet weather and thunderstorms.