It strains me past the compass of my wits

The influenza viruses established in humans for several decades originated from bird viruses.

And all different strains are colored in different colors.

Our mushroom strains were in the highly active range.

The virus is not well adjusted to the chicken, and some strains of the virus go berserk.

Some strains are also found in the cocoons of the earthworm Eisenia fetida .

In addition, wild aquatic birds carry all known strains of influenza.

Most swine flu vaccine manufacturers include an H1N1 and an H3N2 SoIV strains.

Bacterial strains with the cagA gene are associated with an ability to cause ulcers.

As a result, we had to streak and restreak several times.

Enterococcus faecium is a Gram positive, alpha hemolytic or nonhemolytic bacterium in the genus Enterococcus .

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In the late 1980 s, biologists found strains that were resistant to all known insecticides.

And once you get increased antibiotic resistance, the antibiotics aren't knocking out the harmful strains anymore.

If treatment adherence is poor, resistant HIV strains can emerge and lead to treatment failure.

And we found that in Chile within two months of the invasion of Peru you had strains entering Chile and when you look at those strains, in the very far left hand side of this graph, you see a lot of variation in the toxin production.

Different strains of E. coli are often host specific, making it possible to determine the source of fecal contamination in environmental samples.

The tester strains also carry mutations in the genes responsible for lipopolysaccharide synthesis, making the cell wall of the bacteria more permeable, and in the excision repair system to make the test more sensitive.

Eggs of species of mosquitoes from the temperate zones are more tolerant of cold than the eggs of species indigenous to warmer regions.

Pathogenic strains of H. pylori have been shown to activate the epidermal growth factor receptor (EGFR), a membrane protein with a TK domain.

Chicken vaccines are often only vaguely similar to circulating flu strains some contain an H5N2 strain isolated in Mexico years ago.

Late in 1985, bacterial strains, basic laboratory equipment, pilot scale production equipment and materials were procured from foreign suppliers.

This implied that, if anything grew in our cultures, then they must be able to live off of phthalates.

For example, knowing which E. coli strains are present in a water sample allows researchers to make assumptions about whether the contamination originated from a human, another mammal, or a bird.

All subtypes (but not all strains of all subtypes) of influenza A virus are adapted to birds, which is why for many purposes avian flu virus is the influenza A virus.

In the last two decades, particularly virulent strains of Enterococcus that are resistant to vancomycin (vancomycin resistant Enterococcus , or VRE) have emerged in nosocomial infections of hospitalized patients, especially in the US.

The pathogens exploiting this endocytic pathway include viruses such as SV40 and polyoma virus and bacteria such as some strains of Escherichia coli , Pseudomonas aeruginosa and Porphyromonas gingivalis .

In 2013, A. terreus was found to be capable of sexual reproduction when strains of opposite mating types were crossed under appropriate culture conditions.

One would be to take a lot of different strains of this organism some that produce a lot of toxins, some that produce a little and take those strains and spew them out in different countries.

The current strain of H5N1 responsible for the deaths of birds across the world is an HPAI strain all other current strains of H5N1, including a North American strain that causes no disease at all in any species, are LPAI strains.

And then, you see sort of like a stasis coming on where the system essentially waits for a new type of innovation, like this one, which is going to spread over all the other innovations that were before and is erasing the genes that it had before, until a new type of higher level of complexity has been achieved.

In every case there's a lot of variation, but something about the environment the people are living in, and I think the only realistic explanation is that it's the degree of waterborne transmission, favored the harmful strains in one place, and mild strains in another.