We may think of ourselves as just human, but we’re really a mass of microorganisms housed in a human shell. Every person alive is host to about 100 trillion bacterial cells. They outnumber human cells 10 to one and account for 99.9 percent of the unique genes in the body.
Katrina Ray, a senio... Read More
Contrary to popular belief, the foodborne pathogen Campylobacter jejuni is not a harmless commensal in chickens but can cause disease in some breeds of poultry according to research. Campylobacter jejuni is the most frequent cause of foodborne bacterial gastroenteritis in the world and the Cente... Read More
No admission for bacteria: Scientists from the University of Freiburg have succeeded in preventing Pseudomonas bacteria from entering host cells with the help of a sugar complex. Dr. Thorsten Eierhoff and junior professor Dr. Winfried Römer from the Institute of Biologie II, both members of the ... Read More
EURAC and University of Vienna discover an opportunistic pathogen in an Iceman tissue biopsy
Ötzi’s human genome was decoded from a hip bone sample taken from the 5,300 year old mummy. However the tiny sample weighing no more than 0.1 g provides so much more information. A team of scientist... Read More
Many studies have shown that more severe illness and even death are likely to result if you develop a secondary respiratory infection after developing influenza. Now, however, a team of researchers based at The Wistar Institute has determined that if you reverse the order of infection, the bacte... Read More
The Centers for Disease Control plans to take measures to better protect lab workers and the rest of us from dangerous biological samples.
Twenty-one dead lab chickens piled up this spring at a government facility before its researchers could pinpoint why. The team had requested and received ... Read More
Wild poliovirus has been detected in the sewers of Brazil and Israel. Fortunately, no cases of poliomyelitis have been reported in either country. Why is poliovirus present in these countries and what are the implications for the eradication effort?
Wild type poliovirus (e.g. not vaccine-deri... Read More
After studying 137 varieties of cheese collected in 10 different countries, researchers have been able to identify three general types of microbial communities that live on cheese, opening the door to using each as a 'model' community for the study of whether and how various microbes and fungi c... Read More
The symbiosis between some plant species and nitrogen-fixing nodule bacteria is one of the most relevant cooperative relationships in the world. It shapes our global vegetation and, not least, the global nitrogen and carbon cycle. The foundations for this process were probably laid in just one e... Read More
Some heavy metals share a long history with microbes. Many of the metabolic processes that sustain life are believed to have originated from spontaneous reactions involving metals present in the early Earth. Our microbial ancestors figured out quickly how to use those metal catalysts to generate... Read More
Sulfur-indole-motility test (SIM media) results for:
(A) Escherichia coli: Motile***, hydrogen sulfide (-), indole (+)*
(B) Staphylococcus aureus: Non-motile, hydrogen sulfide (-), indole (-)
(C) Salmonella arizonae: Motile, hydrogen sulfide (+)**, indole (-)
(D) Enterobacter aerogenes: Mot... Read More
Read about Angelina Fanny Hesse, an unsung heroine of microbiology who helped make the isolation of bacteria possible in this Popular Science blog post by Christina Agapakis:
"In the earliest days of microbiology, scientists were stumped about how to isolate bacteria. That is, until the fami... Read More
Using public toilets in China can often be a challenging undertaking, particularly for those not practiced in the art of squatting. But researchers in China have come up with a new technology that they say can help eliminate one of the most noxious of problems to plague China’s public lavatories... Read More
india ink preparation for cryptococcus neoformans.
this organisism is isolated from suspected of cryptococcosis from HIV infected patient, 45yrs/M.this work is performed at , deparment of Mycology at TU, Teaching Hospital, Ktm, nepal.
Phenotypic test done for conformation of this organisms... Read More
Health officials in West Africa say 25 more people have died from Ebola since 3 July, taking the total number of deaths to 518.
The World Health Organization (WHO) said 50 new cases of the deadly disease had also been reported.
A WHO spokesman said health workers were struggling to contain... Read More
A team of Chinese and Danish researchers has identified 500 new species of gut-residing microorganisms and 800 new bacterial viruses which could attack them. The findings could lead to promising new treatments and possibly circumvent the current crisis of antimicrobial resistance.
Using a tec... Read More
Those of us who write about infectious diseases faced a conundrum last week, when the news broke that 60-year-old vials containing viable smallpox virus had been found on the National Institutes of Health campus. A responsible reporter always wants to talk to the experts in any subject. But when... Read More
Pediatrician Jennifer Halverson will never forget her 36th birthday.
The St. Paul native was volunteering at a maternity clinic in Port-au-Prince, Haiti. She felt great — she went to her job that day and then out to dinner with friends.
But when she got home and went to sleep that night in... Read More
The microbial ecosystem in the human gut can switch from one stable state into another, without staying for a long time in between. Key groups of bacteria tend to be either nearly absent, or relatively abundant in any given individual. This discovery highlights fundamental organizing principles ... Read More
The U.S. education policy world—the entire country, for that matter—is on a quest to increase the ranks of future innovators in science and technology. Yet the programs that get funded in K–12 education do not support students who are already good at and in love with science. These students have... Read More