Scientists describe a group of proteins that protect cells from a subtype of human papilloma virus. They also outline genetic mutations that make this virus unusually harmful in people with epidermodysplasia verruciformis, a rare skin condition.
Researchers find that a deficiency of acetyl-L-carnitine is associated with a particular subtype of depression. Individuals with very low levels of this molecule often have highly severe symptoms and don’t respond to traditional antidepressants.
A new study in ants identifies a peptide that plays an important role in regulating reproduction. This research illuminates a potential trajectory for the evolution of distinct social castes—workers and queens.