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Tag: "mirrors" at biology news

Study uncovers a lethal secret of 1918 influenza virus

...ion was necessary. The rapid course of the disease mirrors how quickly the disease ran its course in its human victims in 1918. Upon infection, the virus grew rapidly in the infected animals, suggesting the agent somehow sets the stage for virulent infection: "Somehow, early in infection, this virus does ...

T-ray breakthrough could make detecting disease far easier

...chieved using the conventional means of lenses and mirrors to focus the radiation. This limits the spot size of focused T-rays to a substantial fraction of a millimetre and this has made studies of small objects such as biological cells with high resolution are virtually impossible. But in their work the...

Artificial cornea offers better results for infants, some blind patients

...upported in part by Research to Prevent Blindness, mirrors similar success in adult patients that was reported by the Rochester team this summer. The latest study involved a plastic device known as the Boston Keratoprosthesis, an artificial cornea used by just a few doctors in the world to treat children ...

How blood flow dictates gene expression

...he expression of Klf2 in a developing mouse embryo mirrors events in previous tissue-culture studies. They found that Klf2 is expressed on the high-flow side of developing mitral and aortic valves in the heart of a 14-day-old embryo. The researchers surmise that the mechanical stimulus of blood flowing in...

Flick of whiskers helps tease out brain's 'shadow' signaling system

...nimal's brain learns information from its whiskers mirrors the way people learn from their senses. Wang and Nedergaard found that with a puff of air on a whisker, astrocytes become activated ?pumped with calcium ?in the section of the brain that processes sensory input. The chemical step is a sign that the ...

Mouse mimics chronic leukemia, will aid drug development

...53. The study also shows that the mouse disease mirrors CLL patients in its response to the drug fludarabine, including the development of resistance. "This suggests that we can use this model to study the molecular changes that lead to fludarabine resistance and perhaps learn how to circumvent it," sa...

Secrets of the sea yield stronger artificial bone

...Berkeley Lab scientists developed a composite that mirrors the intricate structure of nacre, which is a finely layered substance found in some mollusk shells, such as oysters and abalone. Scientists have long sought to duplicate nacre's strength and lightness in ceramic materials, but nacre's architecture va...

UF scientists trace origin of shark's electric sense

...tment and first author of the paper. The process mirrors the development of the lateral line that allows fishto mechanically sense their environment, and organs of the inner ear that enable people to keep their balance. But scientists suspect as human ancestors emerged from the sea, they discarded their la...

Exotic crab poised for widespread UK invasion

...he pattern of the spread in the UK since the 1970s mirrors the spread in mainland Europe and in the Baltic region which experienced an major outbreak. This is a fairly good indication that the UK is set for a similar situation." Mitten crabs can be found in the sea or rivers because they are catadromous - ...

Hantavirus found in African wood mouse

...) of viruses that are restricted to a host species mirrors the phylogeny of their respective hosts," he explained. "So the discovery of an African hantavirus will significantly advance the understanding of hantavirus evolution and of rodent evolution." The researchers originally collected hundreds of Africa...

Mice studies illustrate potential of chimp/human antibodies to protect against smallpox

...iveness against the monkeypox virus, which closely mirrors smallpox but is less virulent in humans. Currently, the smallpox virus exists in only two laboratories found in Atlanta, Georgia, and in Russia. ...

Tsunami + 1 year: Reviving exhausted fisheries should trump replacing boats, gear, experts say

...affected by the tsunami but suspects the situation mirrors that throughout the neighbouring area. For example, the total biomass of bottom swimming (demersal) fish at depths to 50 metres in the Straits of Malacca off the west coast of Malaysia declined to 11% of levels at the beginning of the 1970's. A sim...

Brains response to visual stimuli helps us to focus on what we should see, rather than all there is to see

...t a time. They used rats, whose brain organization mirrors that of a human, and dissected tiny vertical slices to preserve the circuitry. With fine glass pipettes, they recorded tiny impulses in individual live neurons and listened to their responses when other neurons were optically stimulated. If impulses...

Locusts' built-in 'surface analysis' ability directs them to fly overland

...ere reflecting polarized light -- for example from mirrors or plastic surfaces." The sea reflects polarized light much more than dry land (which reflects mainly diffused, non-polarized light), enabling a distinction to be made between the two. "When the locusts are presented with a situation of choice betwe...

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