Seminal fluid harbours the as yet unknown mechanism that facilitates rapid adjustment of sperm velocity in response to changing sperm competition risk.

A change in social status can quickly lead to a change in the quality of the seminal fluid produced by a male Chinook salmon as he responds to increased reproductive competition from higher-status males.

Repeated interrogation of single germinal centers in vivo reveals a more fluid landscape than expected and unlocks new lines of investigation.

Using a combination of aspirin, anti-tuberculosis drugs and steroids may help to reduce the number of strokes and deaths in patients with tuberculous meningitis.

A protein called SAS-7 is required for daughter centrioles to become mothers in C. elegans.

A better understanding of the remarkable diversity, natural history and complex ecology of E. coli in the wild could shed new light on its biology and role in disease, and further expand its many uses as a model organism.

There should be a prominent place for theory within biology papers, both as Results in papers that combine experiment and theory, and as Results in theory papers.

The orphan receptor GPR158 is highly regulated by stress exposure and acts on key neuronal signaling pathways in the prefrontal cortex to control depressive-like behaviors.