A genome-organizing protein that is present only in the olfactory system of mice has been found to orchestrate changes in the relative numbers of different odor-sensing neurons on the basis of how active these neurons are.

A protein that can recognize regions of DNA with a high proportion of unmethylated CpG dinucleotides, and then recruit polycomb group proteins to these CpG islands, has been identified.

The first survey of the complete morphologies of nerve endings in the skin of mice has revealed enormous structural diversity.

Individual granule cells within the cerebellum-the region of the brain that coordinates movement and supports the learning of new motor skills-receive both sensory and motor input streams: an arrangement that may help the brain to use feedback to fine-tune movement.

The circadian clock in the model plant organism Arabidopsis thaliana is best described as a highly connected network made up of clock-regulated activators and repressors of transcription, rather than two coupled, repressor-based feedback loops.

Imaging experiments reveal that some brain regions do not distinguish between actions performed using tools and those performed using the hands, while others represent these two types of action separately.

Ribosomes translate through stop codons far more often than previously thought, yielding C-terminally extended proteins in a variety of eukaryotes.

Body shape and behavioural specializations found across the castes of ant species evolved together and reflect different abilities for ground behaviors.

Rats show socially selective helping behavior based on familiarity with the type of rat, but not necessarily the individual rat.