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TWiM 136 Letters

Steve writes:

Hi Microbophiles,

Here's an interesting little historic snippet from The Lancet.
Venerable bacteria: In another interesting history of science piece, The Lancet gets bully over Koch's bovine TB samples--but not over the tragedy o... Read More


Casein Plates contain the major milk protein found in milk. Pseudomonas aeruginosa grown on Casien agar for 72 hours at 37 degree's C to look for the presence of the exoenzyme proteases/caseases . Pseudomonas aeruginosa, casein hydrolysis, as noted by a zone of clearing around the organism, as... Read More

Cancer Killing Viruses

Guest host Lynda Coughlan reviews how oncolytic viruses, which specifically kill tumor cells, are designed and how they work. Read More

A Sweater and a Shirt Came Before Just a Shirt

It is not unexpected that the contemplation of bacteria and archaea should focus so much on the nature and im­portance of their cell envelopes. Here, after all, is the in­ter­face between the cell's interior and the outside world. It is also what a host perceives early on when becoming infected.... Read More

2016 MacArthur awards name two geomicrobiologists

The 2016 MacArthur awards have just been announced. Among the handful of scientists are two microbiologists, Dianne Newman and Victoria Orphan, both at Cal Tech and both geomicrobiologists. We rejoice. Both are extraordinary scientists with an unusually broad range of interests.

Click "source... Read More

Phenotyping Microbial Cells: How and Why by Barry Bochner, Biolog, Inc.

Barry Bochner with Biolog, Inc., presents an ASM Virtual Lecture on phenomics, a relatively new technology that can be applied with diverse microbial cells to expand our understanding of the effect of genetic or environmental changes on cells.

ASM’s virtual lectures are conducted by fellows ... Read More

Happy Halloween MAC Style

E. Coli grown on MacConkey Agar at 37 degrees for 24 hours in the shape of a jack-o-lantern face.
-Important Ingredients: crystal violet, bile salts, neutral red (color indicator), lactose
-Differential: used to identify and isolate lactose fermenting G- enteric bacteria mainly Enterobacteriac... Read More

Interview with Phillip Sharp, PhD - Principles of Virology, 4th Edition

Vincent Racaniello of the This Week in Virology podcast interviews Phillip Sharp, PhD, about his career and professional experience in the field of virology. Sharp's research interests have centered on the molecular biology of gene expression relevant to cancer and the mechanisms of RNA splicing... Read More

Examining Aspergillus fumagatus on the Space Station

As the durations of manned space missions increase, it is vitally important to understand the long-term consequences of microbial exposure on human health in closed human habitats. One mission of the Microbial Observatory Experiments on the International Space Station is to examine the traits an... Read More

Happy Halloween!

Staphylococcus aureus grown on Mannitol salt agar (MSA) for 24 hrs at 27 degree's C in the shape of a jack-o-latern smile.
MSA is a selective and differential agar used to differentiate between pathogenic S. aureus and S. epidermidis
•Important Ingredients: Phenol red, mannitol (sugar), 7.5% N... Read More

Serratia marcesens on Casein

Casein Plates contain the major milk protein found in milk. Serratia marcesens was grown on Casien agar for 72 hours at 37 degree's C to look for the presence of the exoenzyme proteases/caseases . Serratia marcesens exhibits casein hydrolysis as well as red colony pigment prodigiosin. 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

Microbiology Career Profiles – Assistant Scientist at DuPont Nutritional & Health with Wesley Morovic

Wesley Morovic explains his journey from a Bachelor’s degree from the University of Wisconsin to DuPont. Learn more about what he does, how he got to his position, and what you should do to get there. Read More

Microbe Mafia

Meet the Microbe Mafia: K. rhizophila, E. coli, and C. xerosis. They might seem like friendly bacteria but are always looking for opportunities to cause disease. Well ..... K. rhiz is really not that bad but peer pressure works in bacterial populations as well. When armed with C. violaceum th... Read More

Cancer & Infectious Diseases: Bacterial Proteins/Peptides for Therapy and Prevention

Ananda Chakrabarty, PhD, Distinguished University Professor, University of Illinois College of Medicine at Chicago, discuses how certain pathogenic bacteria, pseudomonas aeruginosa and neisseria menigitidis, secrete protein weapons (azurin and laz) to fight cancer, providing our next generation ... Read More

Diverse host pathogen interactomes for 17 species of bacteria, spirochetes, viruses, fungi and protozoa

The Host pathogen interactomes include the Bornavirus; Borrelia Burgdorferi; Candida albicans; Chlamydia Pneumoniae ; Cryptococcus Neoformans; Ebola virus; Epstein-Barr virus; Helicobacter pylori; Hepatitis C virus; Herpes simplex (HSV-1); HERV-W; Human cytomegalovirus; Influenza A virus; Porphy... Read More

Lichen on tree trunk

Lichen, a consortium of cyanobacteria and fungus in a symbiotic relationship, is commonly found on damp concrete surfaces where the moisture made an otherwise inhabitable niche into a habitable one. Moisture together with photosynthetic cyanobacteria enable the churning out of complex organic mo... Read More

Kocuria rosea colony variants

This photo was taken through a dissecting scope. Normally our Kocuria rosea display a smooth colony surface. One semester, they displayed a wrinkled surface. Last fall I observed a plate with both. October 2, 2015 Read More

It's not about size.. It's about what you are

A Nutrient agar plate exposed to air for few minuts shows the truth of world well. after a overnight incubation at room temparature. A small but significant fungus colony prevents growth of large fungus colony.
Same thing happens in our world mannier times when small people (so c... Read More

"The Amazing Adventures of the Virologists” Part One - Chapter _ 1

“We Are Very Much Thankful to:
Prof. Vincent Racaneillo (USA) - Columbia University
A. Prof. Andrew Marsh (UK) - University of Warwick
A. Prof. Gulfaraz Khan (UAE) - United Arab Emirates University
Dr. Ryan McNamara (USA) – University of Chapel Hill, NC
Dr. Sharon Kuss (USA) - UT Southweste... Read More
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