The legislative package for 2020 allots $25 million for gun-violence research, which has been on hold for more than two decades.

The number of new babies is up from zero born last year, but scientists say the birth rate is still too low to sustain the population of endangered whales.

Amputation of one limb triggers a rapid electric response that reflects the injury in the opposite one, researchers find.

Previously considered immobile, these cells swoop in to seal epithelial holes and clean up cellular detritus.  

Immune cells called macrophages from the peritoneal cavity of mice migrate to injured livers and aid in repair.

In mice, immune cells from the body cavity surrounding organs arrive at the site of damage to chew up the nuclei of dead cells.

Injured muscle cells leave behind organized collagen fibers that act as scaffolding for new tissue growth.

Determining which critters are present in an infected wound could aid in treatment, particularly of soldiers injured in combat.

Scientists show that reactivation of an RNA-binding protein in damaged adult tissues can lead to improved regeneration.