Stanford discovery may help predict when toxoplasma can be deadly
...We think that the different versions of Toxoplasma strains evolved for optimal interaction with different hos...he china shop." The origins of the more virulent strains of Toxoplasma were first documented in a 2001 Science paper from Boothroyd's group; the researchers ...One gene 90 percent responsible for making common parasite dangerous
...it easier to identify the parasite's most virulent strains and treat them. The results suggest that when a mo... virulence gene than that found in the more benign strains of the parasite. Infection with T. gondii, or toxoplasmosis, is perhaps most familiar to the gener...Flu shot effective against drifted influenza, nasal spray vaccine less so
...R, Mich.--- During a year in which the circulating strains of influenza showed genetic differences from the strains in vaccines, the traditional killed-virus flu shot was found to be effective in preventing influenza...Research upsetting some notions about honey bees
...n 1990. The form that was Italian mixed with other strains has been crossbreeding with an Africanized-Spanish strain. In effect, the Italian mix is disappearing. This has not happened to the same extent with the European varieties. "It is clear that introduced African bees mated with existing U.S. bees and ......he Stowers researchers look to these evolved yeast strains for future explanations of how the duplication of genetic information contributes to the robustness and adaptability of all living things. ...Elusive rust resistance genes located
...h provide resistance against different species and strains of rust," Dr Lagudah says. "This means that breeders can track the presence of this rust resistance through a simple DNA test. If the marker is present then its almost guaranteed Lr34 / Yr18 will be too." Plant breeders have long recognised the ...Protein's tail may be flu virus's achilles heel
... target that drug makers can use to attack several strains of influenza, including those that cause bird flu ...nucleoprotein, or NP. NP plays a vital role in all strains of influenza A, including Hong Kong flu, Spanish flu and bird flu. The target is NP's long, flexib...Research yields new insights into the cause of diabetes
...ells do not produce enough insulin. Using special strains of mice bred to be PERK-deficient, the researchers...l culture studies. "Being able to develop special strains of mice that are PERK-deficient in specific organs or tissues was vital to our research," says Caven...New highways carry pathogens and social change in Ecuador
...tch rides with the newly-mobile people, adding new strains of old bugs to the local environment and increasin...according to Eisenberg. "If you keep reintroducing strains of a given pathogen, you're increasing the endemic population of pathogens," he said. The study lo...New finding points way to foiling anthrax's tricks
...heir host so that the bacteria can reproduce. Some strains of E. coli produce more than one kind of sideropho...he gut, such as Salmonella enterica and pathogenic strains of E. coli. These two bacteria also contain a second siderophore, aerobactin, with a molecular struc...Evolution of influenza A virus
...of the samples revealed genetically distinct viral strains circulate across the state within any one season a...ted by chance events, such as reassortment between strains coinfecting a host or the introduction of a particular variant from elsewhere. These factors make pr......t time a globally representative collection of 105 strains of Typhi and investigated the sequence diversity within 90,000 base pairs per strain. Eighty-eight informative sequence differences were detected, showing that the population structure has evolved over the last 10,000 to 43,000 years. Amazingly, the ...Flu can bide time in icy limbo before re-emerging, BGSU biologist states
...rs is talking about the potential for long-dormant strains of influenza, packed in ice in remote global outpo...ld Health Organization annually considers what flu strains are emerging in hopes of tailoring vaccines accordingly. Sometimes theyre wrong, he says. We thought...20 Years of Malaria Research: Outcomes and Perspectives
...n a key player in the fight against drug-resistant strains of the parasite. Opening in 1986 at Nosten's home, the research unit moved to Shoklo in 1989, the largest of the refugee camps on the border of Thailand and Burma, where 9,000 Karen refugees from across the border were housed. The focus of the resea...Science study explains polio's tenacious grip in India
...rge in the population. But, the vaccine's weakened strains can interfere with each other inside the body, producing immunity to one strain but not another. Carefully planned vaccine strategies using the monovalent vaccine could increase the immunization efficacy, enabling polio's eradication in India, Gra...Nanotech tools yield DNA transcription breakthrough
...major bacterial pathogens, including tuberculosis, strains such as XDR-TB that are resistant to current antibiotics have emerged." In addition, bacterial pathogens that may be used in bioterrorism can be engineered, and, in the former Soviet Union, were intentionally engineered to be resistant to current ...Newly identified strains of Chlamydia trachomatis could produce new diseases
... called recombination where genes from one or more strains combine to create new strains and theoretically new diseases. The study is featured in the November issue of Genome Research ...Scientists find mutations that let bird flu adapt to humans
...entified key genetic changes required for pandemic strains of bird flu. The new work, reported in the Nov. 1...ay be possible to detect the emergence of pandemic strains earlier, providing public health officials and vaccine manufacturers with precious time to prepare f......e. This construction allows bones to sustain large strains without breaking, despite being made of essentiall...el and so on, enabling the tissue to sustain large strains despite being comprised of essentially not deformable particles at the atomic level. The brittle apa...Lab-on-a-chip could speed up treatment of drug-resistant pneumonia
...is often delayed by the need to identify bacterial strains by growing them in culture first. At this week's A...bardment by antibiotics and disinfectants has bred strains of super-bugs that only respond to very specific drugs. These super-bugs often lurk in hospitals, wh...