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Tag: "enemy" at biology news

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

...ers died from malaria in the Pacific than from all enemy fire, Roepe said. The Germans first invented chloroquine (CQ), a synthetic version of quinine, which quickly became the treatment of choice because it was inexpensive − now seven cents a dose − and needs no refrigeration. The drug works by preve...

Fitness has fallen since the days of Ancient Greece

...bronze plates, which meant they could ram and hole enemy ships -- a new technique in naval warfare. To ensure sufficient impact to cause damage, the triremes had to reach great speeds -- so were designed with more than three times more rowers than earlier warships. By placing the rowers on three tiers, the...

How T lymphocytes attack

...t it. These "defenders" methodically encircle the enemy positions and "patrol" until they meet a tumour cell, which they have previously learnt to recognise. They then halt to eliminate it, before resuming their rounds. The rapidity of the advance achieved by T lymphocytes is indicative of either the ab...

Creating new life forms that may help eradicate cancer affecting women

...becomes a cancer-fighting 'Trojan horse,' with the enemy tucked inside." For breast cancer, Dr. Shababi's team fused Listeria with a tumor-associated protein, HER-2/Neu, to immune cells, to create a vaccine called Lovaxin B. What these cells do is enlist killer T cells to seek and destroy tumor cells t...

Global malaria map key weapon in fight against malaria, scientists say

...fessor Bob Snow. "Like any war, knowing where your enemy is located and in what strength determines how you engage them. Intelligence is key ?without an intelligent approach to global malaria control I fear there will be much wasted funding and many missed opportunities." ...

Mass vaccination unnecessary in the event of a large bioterrorist US smallpox attack

... said. "The process was kind of like unveiling the enemy to the point where we really understood it. This research has helped us demystify the threat a bit." Although smallpox has been eliminated as a naturally-occurring disease, the virus still exists in two approved laboratories in the United States an...

Researchers map spread of pathogens in the human body

...ogous to fighting a battle, if you know where your enemy is and how it moves around, you can make calculated, strategic strikes." Currently, the debate over the usefulness of multiple-drug therapy must take into account the full evaluation of potential synergistic effects of combining drugs that can tar...

Cougar predation key to ecosystem health

... huge influx of human visitors. With their natural enemy gone, growing and ravenous deer populations ate young cottonwood trees almost as quickly as they sprouted, robbing streambanks of shade and erosion protection. As a result, floodplains began to erode away. Other types of vegetation and the animal s...

Polynesia explorers created worldwide web of scientific knowledge

...uenced discourse at home and fought their fiercest enemy ?not mosquitoes, but swarms of missionaries who invaded their turf and challenged their findings. Liebersohn's study is the first to put the travelers at the center of the "networks of knowledge" story, to make them "mediators in the global system f...

Molecular force field helps cancer cells defend against attack

...nterprise would deploy a deflector shield to evade enemy attack, tumor cells are capable of switching on a molecular force field of their own to fend off treatments aimed at killing them. Now University of Florida researchers have found a chink in their armor. The cells churn out an enzyme that bonds with...

CU, USDA team to curb two invasive, poisonous vines

...m of 10 years before we can even release a natural enemy to control their growth," said Antonio DiTommaso, associate professor of weed science at Cornell. "The collaboration between Cornell and the USDA involves studies of the plants' biology to identify weak links in the life cycle that should be targete...

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

... 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 interesting w...

Vietnam war technology could aid elephant conservation

Seismic sensors developed to track enemy troop movements during the Vietnam war could help ecologists monitor and conserve elephant populations, according to new research published in the British Ecological Society's Journal of Applied Ecology. Dr Jason Wood and colleagues from Stanford Un...

Sandia completes depleted uranium study

...DU in armor-piercing penetrator bullets to disable enemy tanks during the Gulf and Balkan wars. DU is a byproduct of the process used to enrich uranium for use in nuclear reactors and nuclear weapons. During the enrichment process, the fraction of one type of uranium (uranium-235) is increased relative to ...

FDA approves more generic AIDS drugs

...n -- relaying like Paul Revere the message that an enemy had arrived, Dangl said. Instead, they are needed to form an even earlier disease surveillance antenna or hair trigger. When disease invaders pull that trigger, infected plants cells quickly commit suicide, often preventing the invader from destroyin...

UNC plant researchers discover proteins interact to form hair-trigger protection against invaders

...n -- relaying like Paul Revere the message that an enemy had arrived, Dangl said. Instead, they are needed to form an even earlier disease surveillance antenna or hair trigger. When disease invaders pull that trigger, infected plants cells quickly commit suicide, often preventing the invader from destroyin...

Alien woodwasp, threat to US pine trees, found in N.Y.

...te dozens of interceptions at U.S. ports, a public enemy has infiltrated the nation's borders. Taken captive in Fulton County, N.Y., and identified by a Cornell University expert, the adult female alien is the only one of its kind ever discovered in the eastern United States. The discovery of a single spe...

NHGRI targets 12 more organisms for genome sequencing

... parasitoid wasp Nasonia vitripennis, is a natural enemy of houseflies, and its relatives are natural enemies of ticks, mites, roaches and other arthropods. It is the genetic model for parasitoids, which lay their eggs on and kill arthropods, thus controlling pest populations. In the United States, the use...

Secret of smallpox's success may lead to bioterror cure

...es can become weaknesses, if the defenders see the enemy coming and compensate for its weapons. By manipulating what is perhaps the most devastating trick in cellular weaponry of pox viruses like smallpox, Arizona State University virologist and Biodesign Institute researcher Bertram Jacobs believes that ...

Study uncovers bacteria's worst enemy

...e for radionuclides. In fact, the bacteria's worst enemy in a nuclear waste site may not be the radioactive elements, but rather, the other toxic metals that might also be found at the site. The study also shows that contrary to the conventional wisdom, when it comes to these environmental bacteria, pluto...

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