Sentences with phrase «of bacterial»

Heterogeneity in a bacterial population that arises through a mechanism of biased partitioning of drug efflux pumps, as we identified in our study, could be a stepping - stone on the path of bacterial populations towards antibiotic resistance.»

Electron microscopy of the inner and outer surfaces of bacterial cells gives some clues, and crystallography — a process that involves stacking purified proteins into crystals so that their three - dimensional characteristics can be measured — provides others.

Researchers have shown that, outside of a few specific examples, antibiotics do not promote the spread of bacterial antibiotic resistance through genetic swapping, as previously assumed.

And the feces of emulsifier - fed mice showed higher numbers of bacterial species known to digest and penetrate mucus.

«A lot of the signs and symptoms of a bacterial sinus infection can be similar to those of a viral respiratory infection,» said Ebell, who is a professor of epidemiology at UGA's College of Public Health.

UCLA scientists used DropSynth to make thousands of bacterial genes with different versions of phosphopantetheine adenylyltransferase, or PPAT (pictured).

As a result, the CRISPR locus of the bacterial genome accumulates a chronological record of the bacterial viruses that it and its ancestors have survived.

The stinky chemicals found in bad breath are by - products of bacterial metabolism and include hydrogen sulfide and trimethylamine.

Selective colonization requires both bacterial motility and chemotaxis (the ability to change direction of movement in response to environmental cues), and higher levels of bacterial accumulation cause slower healing.

Strikingly, the germ - free mice did not show an age - related increase in intestinal permeability or in levels of bacterial products or pro-inflammatory cytokines in the bloodstream, in contrast to conventionally raised mice.

Imbalances in the composition of gut microbes in older mice cause the intestines to become leaky, allowing the release of bacterial products that trigger inflammation and impair immune function.

Having the full structural view of the bacterial organelle membrane can help provide important information in fighting pathogens or bioengineering bacterial organelles for beneficial purposes.»

Doing so may have allowed us to fight off an epidemic of bacterial disease

Bacterial spores store information about the individual growth history of their progenitor cells, thus retaining a «memory» that links the different stages of the bacterial life cycle.

Experimental evidence confirms what surveys have long suggested: Physicians are more likely to prescribe antibiotics when they believe there is a high expectation of it from their patients, even if they think the probability of bacterial infection is low and antibiotics would not be effective, according to a study published by the American Psychological Association.

To show that technique worked, the scientists used DropSynth to make thousands of bacterial genes — each as long as 669 base pairs in length.

It is present in soil and, just like E. coli, it can also be found in the human gut, where a complex ecosystem of bacterial inhabitants exists.

«Researchers resolve structure of a key component of bacterial decision - making.»

Medicine: The Art of Bacterial Warfare (p 56) The second leading cause of death worldwide is from the microscopic sized pathogens that lead to infectious diseases.

He found that babies on long - term antibiotics had only a 10th of the bacterial diversity.

To explore this question, investigators at the University of Geneva Hospitals assessed the level of bacterial contamination on physicians» hands and stethoscopes following a single physical examination.

In a study published in Current Biology, researchers at the University of Oxford have shed light on this area of bacterial behaviour, revealing that bacteria approach conflict in much the same way as an army by responding to a threat with a coordinated, collective retaliation.

Then in January, a report from the Centers for Disease Control and Prevention revealed that an elderly Nevada woman had died of a bacterial infection that defied even the biggest guns in the infection - fighting arsenal.

Take the example of bacterial cells, which can even organize socially.

The researchers calculated that millions of bacterial mutations must have occurred over the course their experiment.

Although healthcare workers» hands are the main source of bacterial transmission in hospitals, physicians» stethoscopes appear to play a role.

The compounds have been shown to be effective in killing many species of bacterial pathogens but are generally less effective against the bacterium that causes tuberculosis.

Rout combined forces with colleagues from The University of Montana, The University of Texas Arlington, and University of Washington to investigate whether the differences in soil nutrient concentrations found in an invaded prairie could be due to metabolic processes of the bacterial microbiome associated with the invasive grass, and to determine whether these microbial agents facilitate the perpetuation and spread of this invasive grass.

«With the microfluidic chip we can also answer, how bacteria communicate with each other, how they respond to stress or whether the relationship of bacterial strains plays a role in adaptation strategies,» says van Nimwegen.

May Chu, chief of the diagnostic reference section of the bacterial zoonoses branch of the Centers for Disease Control and Prevention (CDC) in Fort Collins, Colorado, deals with Y. pestis on a regular basis.

He says this idea has «very profound» implications for the debate over the origins of bacterial genes that are present in the human genome but absent in our closest relatives (Science, 8 June, p. 1903): The amount of conjugation Waters detected is «high enough to readily explain» the possible infiltration of bacterial genesinto our DNA, meaning that conjugation could have happened quickly enough to add genes only to humans, in the years since they split from the common ancestor they shared with chimpanzees.

To test whether skin - associated bacteria could be tapped for forensic use, Fierer and his colleagues swabbed the fingertips of three people and their computer keyboards and then sequenced short stretches of the bacterial DNA.

«It will raise much interest not only in a broad community of bacterial signaling research but also of everyone interested in the evolution of protein networks.»

«Even the results of the bacterial experiments were obviously disappointing,» he explains.

One of the best examples of a mixture containing both self - motile and passive agents is that of bacterial colonies.

Kay, together with co-authors Matthew T. Weinstock, Ph.D. and Michael T. Jacobsen (former and current graduate students) synthesized the D - form of the bacterial protein DapA, a 312 - amino acid protein that requires the assistance of a chaperone known as GroEL / ES to fold under physiologic conditions.

Using this switch, the researchers were able to generate about 0.8 grams of glucaric acid per liter of the bacterial mixture, while cells that were engineered to produce glucaric acid but did not have the metabolic switch produced hardly any.

The cost difference is due, in part, to the smaller scale of the MyMicrobes operation, and in part to the size of the bacterial genome, which Bork says contains around 5 billion letters of DNA, compared to the 3.3 billion in the human genome.

Take a dollop of bacterial gloop, add a splash of urea and pour into an underground aquifer.

To explore the health consequences of bacterial quorum sensing in the crypts, the researchers experimented with an antagonist to turn off quorum sensing in chambers colonized by methicillin - resistant S. aureus (MRSA), an antibiotic - resistant strain of bacteria that causes human infection.

Colwell says that the greatest risk of bacterial infection in the Gulf comes from Vibrio fish pathogens and other species that commonly infect shellfish.

The researchers believe the drugs change the composition of the bacterial population in the gut in a crucial developmental stage that may have a long - lasting impact.

A complete, cloned complementary DNA copy of the RNA genome of poliovirus was constructed in the Pst I site of the bacterial plasmid pBR322.

Researchers at Technische Universität München (TUM) have now shown that an unfavorable configuration of bacterial networks in the gut really can cause inflammation.

According to the opposing view, less frequent sampling of the bacterial population would have shown evolutionary growth more consonant with the traditional, gradualist conception.

To test the system, Lu and his graduate student, Allen Cheng, created a library of 34,000 pairs of bacterial genes.

The human body hosts hundreds of bacterial species that perform various salubrious housekeeping chores, from aiding digestion to helping the immune system identify foreign invaders.

Yale University researchers have identified a handful of bacterial culprits that may drive inflammatory bowel diseases (IBD) such as Crohn's disease and ulcerative colitis, using patients» own intestinal immune responses as a guide.

Not only are there separate colonies inside and out, but skin harbors a multitude of bacterial colonies.

They found that while arms have high measures of bacterial diversity, they have lower fungal diversity.