Run Away From Your Depression Scientists have discovered a molecule with antidepressant actions, which is produced by the brain as a result of physical exercise.
Bad To The Bone A drug commonly prescribed to diabetes patients may have negative effects on the bone.
Restoring Bacterial Killing In Cystic Fibrosis A report published online reveals that high protease levels in the lungs of patients with cystic fibrosis disable immune cells, explaining why CF patients fail to clear lung infections.
Genetic Risk Factor For Psoriasis Individuals carrying extra copies of a cluster of genes encoding a family of small antimicrobial proteins are at increased risk of developing psoriasis.
Coding Gene Regulation Three papers published online analyse a component of chromatin - the complex of DNA and protein that makes up chromosomes - and identify two new modifications that expand the 'chromatin code'.
Induced Pluripotent Stem Cells Without Tumours Building on their research reported last week, Shinya Yamanaka and colleagues show how to convert adult mouse or human skin cells into cells that resemble embryonic stem cells without using the tumour-causing gene c-Myc.
A Double Agent Exposed A tumour needs its own network of blood vessels to fuel its growth and so it commandeers factors from its host to help - for example, ones ordinarily active in wound healing.