In zebrafish, some amount of reactive oxygen species is required for normal development.

The finding confirms that a cluster of cells that directs the fate of other cells in the developing embryo is evolutionarily conserved across the animal kingdom.

A trio of papers provide new insight into embryo development.

New details of the molecular process by which our cells consume themselves point to therapeutic potential.

Research into the biological basis of gender identity is in its infancy, but clues are beginning to emerge.

The switch from maternal factors involves dynamic reprogramming of the zygotic genome.

From guiding branching neurons in the developing brain to maintaining a healthy heartbeat, there seems to be no job that the immune cells can’t tackle.

In addition to circulating in the blood as immune sentinels, macrophages play specialized roles in different organs around the body.

Research shows that human immunity develops much earlier than previously thought, but functions differently in adults.

The lungs of extremely premature lambs supported in a closed, sterile environment that enables fluid-based gas exchange grow and develop normally, researchers report.