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Although there are numerous examples of animals having photoreceptors sensitive to UVA (315–400 nm) (1) and relying on UVA-based mate-choice cues (2–5) , here we provide the first evidence of an animal using UVB (280–315 nm) for intraspecific communication. An earlier study showed that...
Mammalian navigation depends both on visual landmarks and on self-generated (e.g., vestibular and proprioceptive) cues that signal the organism's own movement (1–5) . When these conflict, landmarks can either reset estimates of self-motion or be integrated with them (6–9) . We asked how...
A new centre and wider project funded by Kyoto University raises the country's profile in conservation research and its long-standing work with the world's primates. Nigel Williams reports.
Background Simultaneous intracortical recordings of neural activity and blood-oxygen-level-dependent (BOLD) functional magnetic resonance imaging (fMRI) in primary visual cortex of anesthetized monkeys demonstrated varying degrees of correlation between fMRI signals and the different types of...
The testing of depleted uranium (DU; a 97.25% U:0.75% Ti alloy) ammunition and its use in recent war campaigns in Iraq (1991 and 2003) and the Balkans (1995 and 1999) has led to dispersion of thermodynamically unstable DU metal into the environment (1–3) . Although less radioactive, DU has the...
Public backing and new funds are helping to bolster Britain's human embryo and stem cell research ahead of a key bill later this month. Nigel Williams reports.
The evolution of lunglessness in tetrapods (amphibians, reptiles, birds, and mammals) is an exceedingly rare event. So far lunglessness is known to occur only in amphibians, in particular two families of salamanders (1,2) and a single species of caecilian (3) . Here, we report the first case of...
Integrins link the extracellular matrix to the cytoskeleton via a complex of proteins: the integrin–cytoskeleton link. A recent study in Drosophila has uncovered a new component of the link, Wech, and shown that it is essential for integrin-mediated adhesion.
Background The proinflammatory cytokine tumor necrosis factor-α (TNF-α) elicits cellular responses by signaling through a receptor complex that includes the essential adaptor molecule RIP. One important consequence of signaling is activation of the transcription factor NF-κB, and failure to...
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