Search results
Results from the WOW.Com Content Network
Illustration of streak plate procedure to achieve isolated colonies using aseptic technique. The three-phase streaking pattern, known as the T-Streak, is recommended for beginners. The streaking is done using a sterile tool, such as a cotton swab or commonly an inoculation loop. The inoculation loop is first sterilized by passing it through a ...
In the field of molecular biology, enterotoxin type B, also known as Staphylococcal enterotoxin B (SEB), is an enterotoxin produced by the gram-positive bacteria Staphylococcus aureus. It is a common cause of food poisoning , with severe diarrhea , nausea and intestinal cramping often starting within a few hours of ingestion. [ 1 ]
It has been suggested that staphylococci other than S. aureus can contribute to Staphylococcal Food Poisoning by forming enterotoxins. [6] Streptococcal exotoxins are produced by Streptococcus pyogenes. [7] [8] These toxins share the ability to bind to the major histocompatibility complex proteins of their hosts.
Cases of food poisoning began to be reported in the New York State area on October 18, 2012. The CDC eventually concluded this was an example of O157:H7, its code for a strain of E. coli that is noteworthy for seeming to have genes from a different species, shigella, producing an unusual toxin, though not one especially lethal to human beings ...
Streak a beta-lysin–producing strain of aureus down the center of a sheep blood agar plate. The test organism streak should be 3 to 4 cm long. Streak test organisms across the plate perpendicular to the S. aureus streak within 2 mm. (Multiple organisms can be tested on a single plate). Incubate at 35°-37°C in ambient air for 18-24 hours.
The T-2 toxin was an outbreak and made humans develop symptoms like food poisoning, chills, nausea, dizziness, etc. [38] The trichothecenes mycotoxin affects animals by decreasing plasma glucose, red blood cell and leukocyte counts. [38] Pathological changes in the liver and stomach, as well as weight loss has been accounted for. [38]
Gas appliances are designed to vent CO outdoors, but if there’s a malfunction, they can leak it indoors and cause carbon monoxide poisoning. Breathing in a lot of CO can make you pass out, or ...
S. aureus can cause a range of illnesses from minor skin infections to Staphylococcus aureus food poisoning enteritis. Since humans are the primary source, cross-contamination is the most common way the microorganism is introduced into foods. Foods at high risks are those prepared in large quantities.