Unknown fungal isolated contaminant found on MAC. MAC plate was incubated for 2 months at 4 degrees C once fungal growth was seen. This colony seemed to emerge from the agar and had a 3D appearance. The center of the colony had what seemed to be hyphal growth while the edges had a hard waxy un... Read More
Rhizopus microsporus columella.
Species of the mucoralean genus Rhizopus are very relevant to society, in several respects. They are known as spoilage organisms,contaminating a variety of foodstuffs and agricultural
products during storage and transport. Because of off-odors, unwanted discolor... Read More
Bacillus cereus, a food-borne pathogen, is capable to form biofilms. Biofilms are microbial communities that are controlled by a biological mechanism called quorum sensing. In this image, the B. cereus biofilm was viewed under microscope using LPO and grown in microtiter plate well for 48 hrs of... Read More
Effect of founder cell density on the spatial pattern formation in colony biofilms.
The colony biofilms were obtained by following the protocol described in van Gestel et al (2014) ISME Journal (doi: 10.1038/ismej.2014.52). Briefly, GFP and mKATE2 labeled Bacillus subtilis strain were mixed in ... Read More
Although the bursts of rainbow colors in this photograph are mesmerizing, microbes fight for their lives in the background. Chemist Michael P. Zach of the University of Wisconsin-Stevens Point, snapped this image of a salt sample he collected in a hot, arid valley near Death Valley National Park... Read More
by: cls. sundar khadka,
PG in clinical microbiology,
institute of medicine(IOM), TU teaching hospital , kathmandu, nepal. Read More
Slime production by Staphylococcus epidermidis on Congo Red agar; demonstrated by black colored colonies. Slime production is one of the most important virulence factors produced by Coagulase negative Staphylococci.
The colonies of slime non-producing strains remain pink to red.
It was my first D-test positive coagulase negative S. aureus isolate during my work on Inducible clindamycin resistance among staphylococci” Read More
Bacteria adjust to wide fluctuations in food supply by controlling how big they get and how often they divide. Scientists at Washington University in St. Louis have just worked out the control system E. coli use to delay division so they can bulk up when food suddently becomes abundant. What can... Read More
phenotypic detection of MBL by EDTA.MBL is ambler's class B beta lactamase,which is inhibited by EDTA.this research work was done in our research lab., department of clinical microbiology,tribhuvan university teaching hospital in nepal.
RESULT: zone of inhibition of IMIPENEM with EDTA(IMP+EDT... Read More
phenotypic detection of ESBL by beta lacatmase inhibitor,CA=clavuleic acid..MBL is ambler's class A beta lactamase,which is inhibited by,CA=clavuleic acid .this research work was done in our research lab., department of clinical microbiology,tribhuvan university teaching hospital in nepal.
RESU... 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
Ms. Karen Alarcon, 3rd yr - BS Biology student from St. Paul University Quezon City, Philippines is doing an exercise on exoenzyme screening by select bacterial isolates. On the picture, bacteria on starch agar flooded with iodine was analysed for the production of exoenzyme amylase. Read More
Search and destroy! This image shows us how an immune cell, called a macrophage, attacks foreign bodies like bacteria – or this microbead – completely engulfing it so it can be broken down deep within the cell.
Visualized using scanning electron microscopy by Darren Brown, University of Queen... Read More
Acid Fast stain done on a mix of Staphylococcus aureus and Mycobacterium smegmatis. Carbol fuchsin was applied to the smear and set over a steaming water bath for 10 min to help penetrate the mycolic acid in the cell wall, then rinsed with acid alcohol which washes the carbol fuchsin out of al... Read More
This negatively-stained transmission electron micrograph (TEM) revealed ultrastructural morphology of the Middle East Respiratory Syndrome Coronavirus (MERS-CoV), which was formerly known as novel coronavirus.
(MERS-CoV) was identified in 2012 as the cause of respiratory illness in people. Inve... Read More
Rhizopus microsporis columella
Species of the mucoralean genus Rhizopus are very relevant to
society, in several respects. They are known as spoilage organisms,
contaminating a variety of foodstuffs and agricultural
products during storage and transport . Because of off-odors, unwanted disco... Read More
DNase agar can be used to differentiate between potentially pathogenic S. aureus and other Staphlococcus by looking for the presense of the exoenzyeme DNase. After growth for 24-48 hrs 1N HCL is added to the agar plate. Addition of HCL precipitates DNA in the media causing cloudiness unless t... Read More
Organisms grown in Fluid Thioglycollate Media w/out resazurin dye is a reducing media that uses sodium thioglycollate to chemically combine with dissolved oxygen to deplete the oxygen in the media. All organism except for Neisseria sicca were grown for 48 hours at 37 degrees C. Neisseria sicca i... Read More