A single protein in the brain influences arousal of despair, according to new study in mice. Brain biopsies revealed that mice trying hardest to escape shocks had highest levels of delta-FosB - which may also help humans avoid hopelessness & helplessness.
This tree is constructed from an analysis of small subunit rRNA sequences sampled from approximately 3,000 species from throughout the Tree of Life. The species were chosen based on their availability, but most of the major taxonomic groups were included,