- Serotonin And The Brain
Serotonin is used faster in the winter by people suffering from seasonal depression when compared with a control group.
- The Political Brain
People with a more liberal outlook may have a greater sensitivity to cues signalling the need to change a habitual response.
- Many Targets -- One Tube
Paper presents a strategy to increase the number of targets that are amplified in one PCR reaction.
- Delicate And Dynamic Immunological Equilibrium
Immune cells patrolling the microbe-rich intestine are able to 'tolerate' harmless microorganisms, while attacking and eliminating potentially dangerous pathogens.
- Dialling Up Damage Responders
Certain cells of the immune system more readily tolerate damage to their genes than do other cells.
- Stem Cells Have Nervous Impulses
Blood stem cells become activated in response to signals released by nerve cells.
- Muscle Metabolism And Human Evolution
A variant of a gene associated with elite athletic performance has been subject to strong, recent positive selection in humans.
- Diet Shapes The Human Genome
Human populations that have high starch diets have an increase in the number of copies of a gene whose product breaks down starch.
- Watching Protein-Cutting Enzymes In Action
The activity of proteases -- enzymes that cut other proteins and are important in diseases such as AIDS and cancer -- can be imaged in living animals with 'smart probes.'
- A Rose By Any Other Gene
Genetic variation in just one single odorant receptor can affect an individual's experience of smells, as well as their sensitivity to them.
- SYNERGY Sheds Light On Gene Evolution
A new method that maps the detailed evolutionary history of gene duplication and loss is revealed.
- Clue To HIV Vaccine Success
Scientists report that the protective effect of a neutralizing human antibody is not only due to the antibody's neutralizing activity, but also to antiviral responses due to the antibody's ability to bind to Fc receptors on effector cells.