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Shigatoxigenic Escherichia coli (STEC) and verotoxigenic E. coli (VTEC) are strains of the bacterium Escherichia coli that produce Shiga toxin (or verotoxin). [ a ] Only a minority of the strains cause illness in humans.
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Shortly after, the verotoxin was referred to as Shiga-like toxin because of its similarities to Shiga toxin. It has been suggested by some researchers that the gene coding for Shiga-like toxin comes from a toxin-converting lambdoid bacteriophage , such as H-19B or 933W, inserted into the bacteria's chromosome via transduction . [ 13 ]
This verotoxin was subsequently found to be a member of a family of toxins first identified with Shigella and known as Shiga toxin (Stx). [57] This relationship and the eventual link of TTP to abnormally high levels of ultra-large Von Willebrand factor (vWF) multimers caused by congenital or acquired reductions in ADAMTS13 activity was ...
Escherichia coli O157:H7 is a serotype of the bacterial species Escherichia coli and is one of the Shiga-like toxin–producing types of E. coli.It is a cause of disease, typically foodborne illness, through consumption of contaminated and raw food, including raw milk and undercooked ground beef.
العربية; Azərbaycanca; تۆرکجه; বাংলা; Беларуская; Беларуская (тарашкевіца) Български; Bosanski
The Amanita muscaria mushroom, an iconic toxic mushroom.. A toxin is a naturally occurring poison [1] produced by metabolic activities of living cells or organisms. [2] They occur especially as proteins, often conjugated. [3]
Micrograph showing the viral cytopathic effect of herpes simplex virus (multi-nucleation, ground glass chromatin). Pap test. Pap stain.. Cytopathic effect (abbreviated CPE) refers to structural changes in host cells that are caused by viral invasion.