| D007928 |
Lethal Dose 50 |
The dose amount of poisonous or toxic substance or dose of ionizing radiation required to kill 50% of the tested population. |
LD50,Dose 50, Lethal |
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| D008050 |
Lipid A |
Lipid A is the biologically active component of lipopolysaccharides. It shows strong endotoxic activity and exhibits immunogenic properties. |
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| D008070 |
Lipopolysaccharides |
Lipid-containing polysaccharides which are endotoxins and important group-specific antigens. They are often derived from the cell wall of gram-negative bacteria and induce immunoglobulin secretion. The lipopolysaccharide molecule consists of three parts: LIPID A, core polysaccharide, and O-specific chains (O ANTIGENS). When derived from Escherichia coli, lipopolysaccharides serve as polyclonal B-cell mitogens commonly used in laboratory immunology. (From Dorland, 28th ed) |
Lipopolysaccharide,Lipoglycans |
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| D011135 |
Polysaccharides, Bacterial |
Polysaccharides found in bacteria and in capsules thereof. |
Bacterial Polysaccharides |
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| D011513 |
Proteus mirabilis |
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria that is frequently isolated from clinical specimens. Its most common site of infection is the urinary tract. |
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| D011815 |
R Factors |
A class of plasmids that transfer antibiotic resistance from one bacterium to another by conjugation. |
R Factor,R Plasmid,R Plasmids,Resistance Factor,Resistance Factors,Factor, R,Factor, Resistance,Factors, R,Factors, Resistance,Plasmid, R,Plasmids, R |
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| D003429 |
Cross Reactions |
Serological reactions in which an antiserum against one antigen reacts with a non-identical but closely related antigen. |
Cross Reaction,Reaction, Cross,Reactions, Cross |
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| D004755 |
Enterobacteriaceae |
A family of gram-negative, facultatively anaerobic, rod-shaped bacteria that do not form endospores. Its organisms are distributed worldwide with some being saprophytes and others being plant and animal parasites. Many species are of considerable economic importance due to their pathogenic effects on agriculture and livestock. |
Coliform Bacilli,Enterobacteria,Ewingella,Leclercia,Paracolobactrum,Sodalis |
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| D004926 |
Escherichia coli |
A species of gram-negative, facultatively anaerobic, rod-shaped bacteria (GRAM-NEGATIVE FACULTATIVELY ANAEROBIC RODS) commonly found in the lower part of the intestine of warm-blooded animals. It is usually nonpathogenic, but some strains are known to produce DIARRHEA and pyogenic infections. Pathogenic strains (virotypes) are classified by their specific pathogenic mechanisms such as toxins (ENTEROTOXIGENIC ESCHERICHIA COLI), etc. |
Alkalescens-Dispar Group,Bacillus coli,Bacterium coli,Bacterium coli commune,Diffusely Adherent Escherichia coli,E coli,EAggEC,Enteroaggregative Escherichia coli,Enterococcus coli,Diffusely Adherent E. coli,Enteroaggregative E. coli,Enteroinvasive E. coli,Enteroinvasive Escherichia coli |
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| D012475 |
Salmonella |
A genus of gram-negative, facultatively anaerobic, rod-shaped bacteria that utilizes citrate as a sole carbon source. It is pathogenic for humans, causing enteric fevers, gastroenteritis, and bacteremia. Food poisoning is the most common clinical manifestation. Organisms within this genus are separated on the basis of antigenic characteristics, sugar fermentation patterns, and bacteriophage susceptibility. |
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