Dr. Naveed Ahmed Khan, Professor and Chair, Department of Biological and Biomedical Sciences, The Aga Khan University, Pakistan Read More
Lasers are the new DNA. It is called matrix-assisted laser desorption/ionization–time of flight (MALDI-TOF) and it uses mass spectrometry to quickly test for hundreds of different pathogens in a small sample using a single automated device. MALDI-TOF is increasingly being used in clinical micr... Read More
An 'exhausted' army of immune cells may not be able to fight off infection, but if its soldiers fight too hard they risk damaging the very body they are meant to be protecting, suggests new research from the University of Cambridge. Read More
E. coli on Endo Agar from my class of Water and Food Microbiology. Read More
Nishal Govindji-Bhatt, Post-doctoral Research Associate at the University of Manchester, United Kingdom, and Curtis Dobson, PhD, University of Manchester, discuss how to best avoid eye infection caused by poor contact lens case cleaning.
For fours years I have taught a virology course at Columbia University and have posted videos of each lecture on my website, virology.ws, and at iTunes University. Nearly 100,000 individuals have subscribed to my virology course at iTunes University. Now Columbia has signed an agreement with Cou... Read More
Current smoking cessation aids fail in 80 to 90 percent of smokers. The idea behind this therapy would be to destroy nicotine before it reaches the brain—depriving a person of the “reward” of nicotine that can trigger relapse into smoking. Pseudomonas putida, a bacterium typically found in tobac... Read More
Physarum polycephalum, slime mold, grown in a large perti plate on moist paper towels using oatmeal as the food source. Culture was grown in the dark at room temperature. The paper towel was moistened every day with tap water. After 3 week’s the culture formed sporangia (fruiting bodies). Image ... Read More
Acid Fast stain done on a mix of Staphylococcus aureus and Mycobacterium smegmatis. The stain was done on a culture of M. smegmatis that was incubated on a TSA slant with 1ml TSB added at 37 degree's C for 4 days, S. aureus was incubated in TSB at 37 degree's C for 24 hrs. Several loops of eac... Read More
When I began listening to TWIV almost a year ago, I had just switched majors from philosophy to biology. I am now writing to you good people at TWIM at the end of my first undergraduate summer research gig, where I have had qui... Read More
The World Cup may bring a lot more than soccer to South America in June — a viral epidemic may be traveling with it.
Research published ahead of print Monday in the Journal of Virology warns that FIFA’s 2014 World Cup — the international soccer tournament that draws both teams and fans from a... Read More
My name is Jim from Vancouver. I have no formal education in phraseology but am an enthusiastic follower of TWIP, TWIM & TWIV.
Recently I followed a program about yeast infections and the threat to public health they can pose. Read More
I'm sorry, I may have missed something, but the mechanism behind an effective vaccine is still unclear to me, since infection with F. tularensis does not confer protection. How would a vaccine work?
Katy Bosio replies:
In... Read More
Dear Vincent and Dickson,
I just returned from the annual meeting of the International Society of Travel Medicine (ISTM) where I enjoyed many fantastic lectures and caught more Cutthroat Trout fly fishing the upper Snake River during one ev... Read More
This is the greatest TWiM ever. (#58)
I've always been interested in evolutionary complexity and for the last seven years or so I've been unable to think of evolution in terms of traditional survival of the fittest on an individual level--at firs... Read More
Methyl Red/Vogoes-Proskauer (MR-VP)
One medium used for two separate but related tests, identifying butanediol (VP) or acidic fermentation products (MR) as part of the IMViC test used in the identification of Enterobacteriaceae.
•Methyl Red (MR): detects the ability of an organism to produc... Read More
ANYONE who walks in the woods will be familiar with witches’ brooms (pictured). Many trees sport these bushy tumours, which have a variety of causes. An important one is a group of bacteria called phytoplasma that are, in turn, carried from plant to plant by sap-sucking insects such as leafhoppe... Read More