Sulfonated and non-sulfonated cyanines exhibit very similar fluorescent properties. Non-sulfonated cyanines must be dissolved in organic co-solvent (DMF or DMSO) prior to use, and added to a solution of target molecule in aqueous buffers. Recommended volume of co-solvent should be 10% for Cy3, C... Read More
As someone who has been taking a daily regimen of probiotics for some time now, a recent study was of particular interest to me. Probiotics, for those of you who don’t already know, are live microorganisms that are found to benefit the microbiome in your stomach and intestinal tract. They are be... Read More
Echinococcus granulosus is a tapeworm parasite that in its larval form can cause hydatid disease, which is characterized by cysts forming within the victim's body. In order to complete its lifecycle, the tapeworm must infect two hosts, a carnivore and a herbivore.
The adult form of Echinococc... Read More
Here's my summary of the fourth and final day of ASM2013, with a special surprise guest appearance at the end!
This episode: A virus has borrowed a bacterium's defenses to infect better!
Download Episode (5 MB, 5.5 minutes) 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
This episode: Scientists engineer E. coli to be addicted to caffeine!
This episode: With guest host Susan Gardner! We discuss nitrogen-fixing plant-friendly bacteria that help plants grow in copper-contaminated soil, helping to clean it up!
(19.1 MB, 20.9 minutes)
This episode: Modern hunter-gatherers have very different gut microbes from people from agricultural societies!
(12.9 MB, 14.1 minutes)
the results of this investigation revealed that the marine actinomycetes collected from the sediments of Caspian Sea
might be a potent source of novel antibiotics. Read More
This episode: Phages hang out in mucus to ambush bacteria!
Download Episode (6.4 MB, 7 minutes)
Could the bacterial populations in your intestines predict the onset of colon cancer? Participants will discuss new research in mouse models that suggests a major shift in microbial population dynamic prior to the onset of tumors as well as the general promise microbiome research holds for the ... Read More
This episode: Pathogen's CRISPR-Cas system (for defense against viruses) can be modified to change gene expression in mammals!
When you get the flu, viruses turn your cells into tiny factories that help spread the disease. In this animation, NPR's Robert Krulwich and medical animator David Bolinsky explain how a flu virus can trick a single cell into making a million more viruses.
See and hear the rest of the story o... Read More
This episode: Some bacterial DNA sequence seems to integrate into human cells, especially in cancerous tissue!
The bug lives harmlessly in the noses of about a third of us. But it can turn rogue, causing skin infections—or worse. Heavy use of antibiotics since the middle of the last century has prompted the evolution of deadly superbug strains. Photograph by Martin Oeggerli, with support from School of L... Read More