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Experiments on neurons in the heart system of the leech reveal why rhythmic behaviors differ between individuals.

Harnessing female sex hormones may improve how all patients with melanoma respond to treatment.

The transcription factor c-Myc amplifies the transcription of many growth-related genes in cancer cells, but its role as an oncogene is not fully understood.

A transcription factor that regulates skeleton formation in sea urchin embryos has evolved a new domain that is essential for this process.

Extremely low numbers of active epidermal growth factor receptors are sufficient to drive tumor growth.

Experiments by three independent groups on zebrafish have clarified the role of two signaling factors, Nodal and Gdf3, during the early stages of development.

Bumblebees use invisible temperature patterns on flowers to make foraging decisions.

Many different human cell lines, including both normal and cancer cells, appear to converge to a state that contains an unusual number of chromosomes when they are grown in culture.

Experiments on mice show that an enzyme called DNA methyltransferase 3a is involved in insulin resistance via an epigenetic mechanism.

Bacteria contain large numbers of negatively-charged proteins to avoid the electrostatic interactions with ribosomes that would dramatically reduce protein diffusion.