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Tag: "crossing" at biology news

New project aims to make large-scale lobster farms feasible

...r tendency to crawl in huge single-file lines when crossing open areas between island coasts and reefs, will be the focus of the next Harbor Branch Ocean Science Lecture Series event, on March 9. "Spiny lobsters are one of the most highly-prized fisheries species in the world, and especially in our Florida w...

Natural Killers Could Lead to New Hepatitis Treatments

... when they are activated coming to a stop and then crossing through vessel walls in response to a signal.?/p> The researchers observed that the roving NKT cells stopped their movement when alerted by a foreign protein, called an antigen, “We think this is a reflection of their normal function of searching...

Recombinant DNA technology may enable oral, rather than injectable, delivery of protein drugs

...s are large and bulky, which can prevent them from crossing the intestine and gaining access to the sites where they are needed. They are also very sensitive to digestive enzymes and may be destroyed by stomach acid before they can be absorbed." To sidestep the difficulty of getting these large protein drugs ...

Gap-climbing fruit flies reveal components of goal-driven behaviors

...e chasm is short, flies engage in an extraordinary crossing behavior that the researchers showed involve three motor programs. High-speed video analyses revealed that flies can flexibly combine, and iteratively improve, these three behavioral adaptations in order to traverse gaps much broader than their own b...

New understanding of jet lag

...suffer from jet lag, the malaise experienced after crossing several time zones. The new understanding could eventually lead to the development of medicines that would "reset" the biological clock so travelers could adjust much more quickly to rapid time zone changes. Most people require about two-and-a-half d...

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

...o the Gulf of Eilat, then turned northward without crossing the water. Only when the swarm reached the northern tip of the gulf did some of them turn again east in the direction of Aqaba and other areas of Jordan, as well as straight north over southern Israel. This observation led to examination by scientis...

Scientists develop nanotech-laser treatment that kills cancer cells without harming healthy tissue

...ls, bypassing the normal cells--like Trojan horses crossing the enemy line. Once the nanotubes were planted inside, the researchers shined the near-infrared laser on the cancer cells, which soon heated up and died. "Folate is just an experimental model that we used," Dai says. "In reality, there are more int...

GM crop that holds on to its seeds offers higher yields

...ght. Because of this, Australian crop breeders are crossing it with its close relative Brassica napus (canola or oilseed rape) ?which produces a better quality oil ?to create new varieties. Østergaard says that combining the new drought resistant varieties with his teams' plants that do not shatter their see...

Researchers identify molecular anchor that allows bacterial invasion of central nervous system

... blood-brain barrier cells to begin the process of crossing over into the nervous system." The team began by looking for new bacterial genes that allowed them to penetrate the barrier. Through a process that involved generating and screening thousands of Streptococcus mutants in a laboratory model of the hum...

Biologists discover new pathway into plant cells

...s into cells, but this is just a protein by itself crossing the cell wall barrier without disrupting its integrity. This is a significant fundamental advance in our understanding of plant biology." The research was done with a pathogenic fungus that causes tan spot of wheat, a costly plant disease that is fo...

Travelers can avoid jet lag by resetting their body clocks

...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 resul...

HIV/AIDS rates in Tijuana, Mexico increasing at alarming rate

...lion people located amidst the busiest land border crossing in the world. Data in this study suggest that Tij...o a consideration; 64% of Tijuana residents report crossing the border into the United States at least once a month. "HIV prevention should be considered a pub...

Tastier tomatoes in the future?

... investigated strains of tomatoes created from the crossing of cultured and wild types. Their goal was to iden...the content composition of descendants produced by crossing cultured tomatoes and wild tomatoes. "On one hand, we measured higher amounts of essential amino aci...

Anti-inflammatory drug's potentially deadly side effect found to be rare

...inflammatory immune T cells and prevents them from crossing membranes that protect the brain and the central nervous system. Prior to the studies that were halted last year, earlier studies showed a 66 percent reduction in the rate of relapses in MS patients treated with the natalizumab, which has to be injec...

Record bonefish

...," Ault said, adding that the prospect of bonefish crossing the Gulf Stream has profound implications on the p...ver new information like this that bonefish may be crossing the Gulf Stream. It's what truly can lead to better understanding and managing of our fisheries." ...

Ancient global warming drove early primates' dispersal

...at Teilhardina migrated from South Asia to Europe, crossing the Turgai Straits---an ancient seaway between Europe and Asia---and then spread to North America by way of Greenland. The whole dispersal event happened within about 25,000 years. "It is remarkable to be able to study evolutionary events so dee...

Researchers develop flood-tolerant California rice

... International Rice Research Institute is actively crossing the submergence tolerant Indian rice with lines of rice that are widely grown in southeast Asia in order to produce new lines of rice that can grow in flood-prone areas," she said. In the future, Bailey-Serres and colleagues plan to work on develo...

Study provides new understanding of spontaneous hybridization

...eated the original hybridization event by manually crossing two parent species. Not only were these hybrids resistant to the insects that attack sunflowers, they also produced more seeds than the uncrossed plants. "The results show for the first time that adaptive trait introgression can be a potent evoluti...

Trotting with emus to walk with dinosaurs

...ur's tracks became crossed ?that is, the left foot crossing over the right and the right crossing over the left. That seemed pretty strange and hard to explain on the face of it. But after watching ...

Road-crossing in chimpanzees: A risky business

...ers have found that chimpanzees evaluate risk when crossing roads and draw on an evolutionarily old principle--shared with at least some other primates--of protective "socio-spatial" organization that produces flexible, adaptive, and cooperative responses by a group of individuals facing risk. The research is...

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