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NIH scientists advance understanding of herpesvirus infection

Herpes simplex virus (HSV) infections last a lifetime. Once a person has been infected, the virus can remain dormant (latent) for years before periodically reactivating to cause recurrent disease. This poorly understood cycle has frustrated scientists for years. Now, National Institutes of Healt... Read More

Lactate from human cells may trigger key step in invasion by meningitis-causing bacteria

Lactate produced in the upper throat might trigger meningitis-causing bacterial cells to detach from tiny colonies and spread within the body, according to a new study published in PLOS Pathogens.

The research, performed by Sara Sigurlásdóttir and colleagues at Stockholm University in Sweden,... Read More

Nova Southeastern University Researchers Studying How to Disrupt Bacteria to Treat Infections

One way that bacteria infect people is by working together. First, they build a home called a biofilm, and then use chemicals to “talk with each other.” This allows the bacteria to coordinate an attack on the infected person. Led by NSU graduate Cortney Wilson, Smith’s lab recently discovered th... Read More

Embryonated egg of Ascaris lumbricoides.

Embryonated egg of Ascaris lumbricoides. (Larva is motile inside the shell when seen under microscope)
It is infective stage of Ascaris. On ingestion the cortication is dissolved by gastric acid and the larva inside the egg is released. Fertilized eggs freshly passed in stool are non infective.... Read More

“Too soft, too generous, too nice, and too slow…”

The role of clinical microbiology laboratories in antimicrobial stewardship is often under-rated. This needs to change. Where are the issues and what can be done about them?
Read More

Fine Reading: Unearthing the Roots of Ectomycorrhizal Symbioses

This is a primer on the mycorrhizae, the association of plant roots and fungi. An outstanding re­view article on this subject has recently appeared, authored by four Frenchmen and one Ameri­can: F. Martin, A. Kohler, C. Murat, C. Veneault-Fourrey, and D. S. Hibbett. I found reading it both excit... Read More

Tales of Mystery and Imagination

Over the last ten-plus years of this blog's existence, one cluster of branches on the bacterial phy­lo­ge­ne­tic tree in particular has presented us with fascinating mysteries regarding basic, and seem­ing­ly unique, cellular biology. Many aspects of the species on these branches remain enigmati... Read More

TWiV 438: Drs. TWiV go to Washington

On the eve of the March for Science, the TWiV team gathers at ASM Headquarters in Washington, DC with guests Stefano and Susie to talk about the state of science communication.


Hosts: Vincent Racaniello... Read More

BEA Fungal Contaminant III

Close up of a white fungal contaminants seen on Bile Esculin agar (BEA) after several month at refrigerated temperature. The BEA agar did turn black indicating esculin hydrolysis. This colony mounded in a cone shape with rhizoid growth towards the top and mat lobate growth around the edges. Read More

New Jersey State Microbe

Met with two New Jersey State Senators, two Assemblymen, a lobbyist, and two senior administrators in NJ colleges. They all think the idea of a State Microbe is great. It will give people from New Jersey something to be proud of.
More details will be posted as the story develops. Thank you. Read More

5th Global Chemistry Congress

On behalf of 5th Global Chemistry Congress 2017 organizing committee, invites analytical expertise, chemistry people in all fields, researchers, professors, scientific communities, delegates, students, business professionals and executives to attend the “5th Global Chemistry Congress” which is g... Read More

BacterioFiles 290 - Lichens' Little Lodgers

I'm back! This episode: Lichens, long known to be a partnership between fungi and algae, now discovered to have an important third member!


(8.1 MB, 8.9 minutes)


Show notes: 


Read More

BEA Fungal Contaminant

Seveal fungal contaminants seen on Bile Esculin agar (BEA) after several montha at refrigerated temperature. The BEA agar did turn black indicating esculin hydrolysis. Read More

Purple Scream

Please submit your best bacterial masterpiece to the American Society for Microbiology's annual Agar Art contest!

Shown here is Vibrio fischeri grown on extra salty LB that was stategically dyed purple with Crystal Violet and accentuated with colored markers. Read More

Shoe Swab Mix II

This was a swab taken form the bottom of a shoe incubated for 48 hrs at 37 degrees C then held at room temp for 48 hrs then held at refrigerated temp's. A variety of colony morphology is seen, rhizoid, mucoid, etc. Image taken using transmitted light. Read More

16S Alphabet Soup: A Quick Guide

Broad-range bacterial 16S PCR and sequencing as a clinical diagnostic tool is quickly gaining in popularity. Tune in for a quick refresher on the applications, limitations, and aliases of this test Read More

Freshman Biology, #SciArt, and The Amoeba Sisters

In this post from my microbiology/education blog, I describe another "artistic" approach to learning introductory biology. Two fine #SciArt communicators, "The Amoeba Sisters," offered to judge some of the artwork my first year biology students created. Read More
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