Mice engineered with a brain-specific decrease in insulin-like signaling have their life spans extended as much as those in mice with a similar defect throughout their bodies.

Cytomegalovirus aids its own survival by encoding a microRNA that inhibits, in the infected host cell, translation of a ligand that would normally trigger antiviral responses.

A pheromone produced by honey bee queens prevents aversive learning in workers, possibly to prevent the queen's attendants from forming an aversion to their mother.