Pneumonia is by far the leading killer of seniors who contract either seasonal or pandemic H1N1 influenza, but far too many of the elderly are not immunized against it, according to a report issued Thursday by the Infectious Diseases Society of America, the Robert Wood Johnson Foundation and the... Read More
A team of engineers and chemists at Brigham Young University has created a silicon microchip they say can reliably detect specific proteins or viruses from even small samples at low concentrations. Their invention, which is forthcoming in the paper version of the journal Lab on a Chip, work... Read More
Already incorporated into consumer products ranging from baseball bats and clothing to sunscreens and toothpaste, engineered nanoparticles — ENPs — hold great promise in such areas as energy, pollution remediation, medicine and materials science. The nanotechnology industry is projected to be wo... Read More
A simple, low cost method to detect toxins from the organism causing the wasting disease Buruli ulcer has been developed by US scientists.
Buruli ulcer is a wasting disease caused by organisms called Mycobacterium Ulcerans, which are in the same group as the organisms causing leprosy and tub... Read More
Antiviral drugs block influenza A viruses from reproducing and spreading by attaching to a site within a proton channel necessary for the virus to infect healthy cells, according to a research project led by Iowa State University's Mei Hong and published in the Feb. 4 issue of the journal Nature... Read More
Two groups of Howard Hughes Medical Institute (HHMI) scientists working independently have identified a critical enzyme that allows the malaria-causing parasite, Plasmodium falciparum, to take over and thrive in human red blood cells. The enzyme plasmepsin V (PMV) is a gatekeeper inside the ... Read More
Activated sludge. Note the bacterial rods and filament within the floc. (5000X) Read More
In the late summer of 1882, a ship called the Triton cruised the chilly seas north of Scotland. As it went, it dredged the sea bed for specimens of unknown creatures, under the guidance of the oceanographer John Murray.
Two of the specimens were strange enough that Murray sent them to his col... Read More
One of the most important procedures in virology is measuring the virus titer – the concentration of viruses in a sample. A widely used approach for determining the quantity of infectious virus is the plaque assay. In this technique, the spread of progeny viruses released by individually infecte... Read More
In the latest analysis of packaged leafy greens, Consumer Reports found that nearly 40 percent of samples tested contained bacteria consistent with poor sanitation and fecal contamination.
Leafy greens have been under particular scrutiny since late 2009, when the Center for Science in the Pu... Read More
A major British medical journal on Tuesday retracted a flawed study linking the measles, mumps and rubella vaccine to autism and bowel disease.
The retraction by The Lancet comes a day after a competing medical journal, BMJ, issued an embargoed commentary calling for The Lancet to formally re... Read More
There is now so much unused swine flu vaccine in the world that rich nations, including the United States, are trying to get rid of their surpluses. But the world’s poorest countries — a few still facing the brunt of the pandemic — are receiving very little of it.
Of the 95 countries that to... Read More
Feed contaminated by salmonella bacteria is a familiar and costly problem for the animal feed industry all over the world. Some types of salmonella have succeeded in establishing themselves in feed and fish meal factories and have persisted there for several years because it has proved impossibl... Read More
A common plant virus lures aphids to infected plants by making the plants more attractive, but when the insects taste the plant, they quickly leave for tastier, healthier ones. In the process, the insects rapidly transmit the disease, according to Penn State entomologists.
"The virus improves... Read More
Varicella. Vesicle smear from case of chicken pox. Direct fluorescent antibody (FA) staining readily differentiates chicken pox or zoster lesions from those due to Herpes simplex viru Read More
Researchers at Uppsala University and the Swedish University of Agricultural Sciences (SLU) have found several genes that lead to increased risk for an SLE-like autoimmune disorder in dogs. This is the first time scientists have found genes behind such a complex disease.
The study is being pu... Read More
Researchers at National Jewish Health have discovered how the virulent food-borne bacteria Listeria monocytogenes induces infected immune cells to sabotage their own defensive response. The studies offer insight into host-pathogen interactions and suggest potential therapeutic targets for food p... Read More
Scientists who study how organisms reproduce know that asexual reproduction is more efficient — for one thing, it’s about twice as fast as sexual reproduction, since every offspring can produce more.
But if the asexual way is so efficient, why do almost all animal species reproduce sexually, ... Read More