superantigens

Mira otros diccionarios:

• superantigen — Superantigens are bacterial proteins that stimulate the immune system much more extensively than do normal antigens. They stimulate T cells to proliferate nonspecifically through simultaneous interaction with class II MHC proteins on antigen… …   Dictionary of microbiology

• Superantigen — [ thumb|Figure 1. Schematic of Superantigen stimulation compared to normal antigen presentation and activation [2] .] Superantigens (SAgs) are secreted proteins (exotoxins) that exhibit highly potent lymphocyte transforming (mitogenic) activity… …   Wikipedia

• Exotoxin — An exotoxin is a soluble protein excreted by a microrganism, including bacteria, fungi, algae, and protozoa. An exotoxin can cause damage to the host by destroying cells or disrupting normal cellular metabolism. Both gram negative and gram… …   Wikipedia

• Toxic shock syndrome — Infobox Disease DiseasesDB = 13187 ICD10 = ICD10|A|48|3|a|30 ICD9 = ICD9|040.82 ICDO = OMIM = eMedicineSubj = med eMedicineTopic = 2292 eMedicine mult = eMedicine2|emerg|600 eMedicine2|derm|425 eMedicine2|ped|2269 MeshID = D012772 Caption = |… …   Wikipedia

• superantigen — Antigens, mostly of microbial origin, that activate all T lymphocytes that have a T cell receptor with a particular V b sequence; as a consequence superantigens activate large numbers of T cells. Are presented on MHC Class II but are not… …   Dictionary of molecular biology

• Streptococcus pyogenes — Taxobox color = lightblue name = Streptococcus pyogenes image width = 240px image caption = S. pyogenes bacteria @ 900x magnification. regnum = Bacteria phylum = Firmicutes classis = Bacilli ordo = Lactobacillales familia = Streptococcaceae genus …   Wikipedia

• Staphylococcus aureus — Scanning electron micrograph of S. aureus, 20,000 times enlargement, false color added Scientific classification Domain: Bacteria …   Wikipedia

• Mouse mammary tumor virus — Virus classification Group: Group VI (ssRNA RT) Family: Retroviridae Subfamily: Orthoretrovirina …   Wikipedia

• Colloidal gold — Part of a series of articles on Nanomaterials Fullerenes …   Wikipedia

• Anti-neutrophil cytoplasmic antibody — Anti neutrophil cytoplasmic antibodies (ANCAs) are a group of mainly IgG antibodies against antigens in the cytoplasm of neutrophil granulocytes (the most common type of white blood cell) and monocytes. They are detected as a blood test in a… …   Wikipedia

• L'Oréal-UNESCO Awards for Women in Science — by its Director General.citeweb author = UNESCOPRESS date = March 2, 2007 title = Five outstanding women scientists receive L Oréal UNESCO Awards for Women in Science 2007 url = http://portal.unesco.org/science/en/ev.php URL ID=5212 URL DO=DO… …   Wikipedia