Editor : Be sure to check out the original press release for a mp3 recording of the mouse singing!

Scientists have known for decades that female lab mice or their pheromones cause male lab mice to make ultrasonic vocalizations. But a new paper from researchers at Washington University School of Medicine in St. Louis establishes for the first time that the utterances of the male mice are songs.

Antiviral therapy has been used to suppress HIV replication and has dramatically improved the clinical course of disease in affected patients. But the existence of viral reservoirs precludes the complete elimination of HIV from treated patients. In a new study appearing on November 1 in The Journal of Clinical Investigation, Tae-Wook Chun and colleagues from the NIH offer new insight into the eradication of HIV in infected individuals receiving antiviral therapy.

A simple, at-home treatment -- a single light box and the over-the-counter drug melatonin -- allows travelers to avoid jet lag by resetting their circadian body clock before crossing several time zones, according to new research being published in The Endocrine Society's Journal of Clinical Endocrinology and Metabolism. This treatment can also help those with delayed sleep phase syndrome (DSPS), a persistent condition that results from a misalignment between a person's internal biological clock and the external social environment.

Ground-breaking results from researchers at Harvard Medical School and Massachusetts Institute of Technology (MIT), USA, disclosed at the 13th European Cancer Conference (ECCO) have shown for the first time that targeted drug delivery is possible using nanoparticle-apatamer conjugates.

A new type of immunotherapy in which dendritic cells are tricked into action against cancer when they are exposed to harmless pieces of viruses and bacteria is described in the November issue of Cancer Research. Dendritic cells, the pacemakers of the immune system, are known to play a vital role in the initiation of the immune response but are often eluded by cancer.

The sense of taste informs the organism about the quality of ingested food. It comprises five sub-modalities that perceive sweet, salt, sour, bitter, and umami stimuli. The possibility for an additional taste modality directed to lipid has often been suggested because many animals exhibit a spontaneous attraction for fats, but the existence of an actual sensor remained a matter of debate.

Bees have a much more sophisticated visual system than previously thought, according to a new UCL (University College London) study in which bees were able to solve complicated colour puzzles. The findings shed light on how brains resolve one of the most difficult challenges of vision - namely, recognizing different surfaces under different colours of illumination - by suggesting that bees solve this problem using their experience with meaningful colour relationships between objects in a scene. The findings, published in the Proceedings of the National Academy of Sciences, may one day lead to the design of autonomous robotic systems.