Simulations and experiments on systems containing two different populations of microorganisms show that interactions that benefit at least one of the populations can lead to communities with stable compositions, and that strong cooperation between two populations can lead to communities in which both populations are mixed together.

The Notch signaling pathway has a central role in the formation of the circuit that controls egg-laying in the nematode worm C. elegans.

Sugar levels in leaves act as a signal for plants to switch from their juvenile to their adult form by regulating the expression of two genes.

A lipid acts to promote the development of nematode worm larvae through activation of an enzyme complex called TORC1.

Identifying and treating those groups of individuals that are most likely to transmit the malaria parasite to mosquitoes could help to control the spread of the disease.

Structural and biochemical analysis of a protein called Ecp6, which is produced by a tomato fungus, reveals how the protein prevents plants from launching an immune response to the chitin in fungal cell walls.

Cells from vertebrate and invertebrate model systems can be reprogrammed into stem-like cells using mouse genes.

Regulation of conserved Nodal factors by a maternal protein ensures that Nodal signaling is repressed until the appropriate time in embryonic development.

The relentless expansion that threatens the sustainability of biomedical research in the US takes a heavy toll on young researchers.

Evidence that C. elegans and mammals use homologous versions of the same protein (RIG-1) to activate antiviral defense mechanisms suggests that RIG-1 may have a conserved role in coupling virus recognition to virus destruction.