A new study sheds light on how the body fights back against HIV by mutating the viral DNA.

Scientists have engineered a mouse model to study a rare and often-fatal form of liver cancer. They’ve used it to clarify what drives these tumors at the molecular level, and discover new drug concepts.

Scientists have discovered a peculiarity in the genetic code of HIV that might explain how this and other viruses evolved ways to dodge our immune system. The findings could make it possible to develop safer vaccines.

Scientists have identified a protein that many viruses require to spread within a host—a discovery that could lead to fighting diseases as varied as parainfluenza, West Nile, and Zika with a single drug. This finding could also lead to the development of treatments for emerging viruses.

Scientists found that inhibiting a regulatory protein alters the intricate signaling chemistry that is responsible for many of the disease’s symptoms. The findings provide a path to possible therapeutics for disorders associated with Fragile X.

Scientists have found that stem cells in the skin remember an injury, helping them close recurring wounds faster. The discovery could advance research and treatment of psoriasis and other inflammatory diseases.

Problems with olfaction have been linked to a variety of health conditions. Scientists have developed new tests to detect smell loss more reliably.

Scientists have found unexpected differences in how male and female mice respond to stress. Their findings are raising big questions about sex discrepancies in the brain and their impact on neuropsychiatric disease.

Rockefeller University biologist Michael W. Young, who studies the biological clocks that regulate sleep, metabolism, and response to disease, is this year’s recipient of the Nobel Prize in Physiology or Medicine.

To keep up with evasive flu viruses, new vaccines must be developed each year. Scientists are devising a strategy to better prevent the disease without annual shots.