Results 171 to 180 of about 28,825 (215)
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Talanta: The International Journal of Pure and Applied Analytical Chemistry, 2019
Fluorescent eggshell membrane-templated gold nanoclusters (Au-ESM) can be obtained in a facile and low-cost manner in this study. The fluorescence of the Au-ESM may be significantly quenched by mercapto-compounds and peroxidase-like activity of Au-ESM ...
Fang Tan +6 more
semanticscholar +1 more source
Fluorescent eggshell membrane-templated gold nanoclusters (Au-ESM) can be obtained in a facile and low-cost manner in this study. The fluorescence of the Au-ESM may be significantly quenched by mercapto-compounds and peroxidase-like activity of Au-ESM ...
Fang Tan +6 more
semanticscholar +1 more source
Microheterogeneity of staphylococcal enterotoxin B
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1974Abstract Four components have been demonstrated in staphylococcal enterotoxin B by isoelectric focusing in polyacrylamide gels. In a typical preparation their relative concentrations from the most to least cathodic were 6, 56, 31 and 7%. The components were not stable conformers nor were the differences in isoionic points due to bound ligand.
Leonard Spero +2 more
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The secondary structure of staphylococcal enterotoxins A, B and C
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1980The circular dichroism (CD) of staphylococcal enterotoxins A, B and C was measured. The CD of enterotoxins B and C were almost identical from 250 to 320 nm, but differed from the CD of enterotoxin A. The spectrum of enterotoxin A in this wavelength region contained the same bands with respect to both location and sign, but with significant differences ...
J L, Middlebrook, L, Spero, P, Argos
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2003
Toxins are biologically derived substances that adversely affect living organisms. An astounding number of toxins produced by animals, plants, and bacteria are harmful to humans. Toxins cause food poisonings and envenomations, bleeding disorders, and neurological dysfunction.
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Toxins are biologically derived substances that adversely affect living organisms. An astounding number of toxins produced by animals, plants, and bacteria are harmful to humans. Toxins cause food poisonings and envenomations, bleeding disorders, and neurological dysfunction.
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On the Cross-Reactivity of Staphylococcal Enterotoxins A, B, and C
The Journal of Immunology, 1978Abstract Strong cross-reactions were demonstrated for staphylococcal enterotoxins B (SEB) and C1 (SEC1) by antigenbinding capacity and by competitive binding ability. Both SEB and SEC1 combined completely with the heterologous antibody although requiring four times as much antiserum as the homologous enterotoxin and both displaced about ...
L, Spero, B A, Morlock, J F, Metzger
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Double-antibody radioimmunoassay for staphylococcal enterotoxins A and B
Canadian Journal of Microbiology, 1978A sensitive double-antibody radioimmunoassay for staphylococcal enterotoxins A and B is described. The separation of the primary antigen–antibody complex of enterotoxin A and B was achieved with an anti-rabbit gamma globulin from goats. Radioiodinated aggregate fractions of staphylococcal enterotoxins exhibited reduced immunological activity and ...
H, Robern, T M, Gleeson, R A, Szabo
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Antigenicity of Formaldehyde-Inactivated Staphylococcal Enterotoxin B
The Journal of Immunology, 1973Abstract The reactivity toward or ability to stimulate production of antibodies specific for native staphylococcal enterotoxin B (nSEB) demonstrated by formaldehyde-inactivated toxin (fSEB) is directly related to the extent to which SEB is polymerized by aqueous formaldehyde.
J R, Warren, L, Spero, J F, Metzger
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Fractionation of staphylococcal enterotoxin B by isoelectric focusing
Biochimica et Biophysica Acta (BBA) - Protein Structure, 1971Abstract 1. 1. In the context of studies concerned with a radioimmunoassay procedure for detection of staphylococcal enterotoxins in food, enterotoxin B was purified from the culture supernatant of Staphylococcus aureus, strain S-6. Purified preparations were subjected to the technique of isoelectric focusing of proteins in a stable pH gradient ...
P C, Chang, N, Dickie
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A capacitive biosensor for detection of staphylococcal enterotoxin B
Analytical and Bioanalytical Chemistry, 2008A sensitive method for the detection of staphylococcal enterotoxin B (SEB) using a flow-injection capacitive biosensor is presented. SEB was purified from a crude culture filtrate of Staphylococcus aureus through three chromatographic steps. The first two steps were based on ion-exchange chromatography, and the last step was carried out on a gel ...
Mahmoud, Labib +3 more
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Fractionation of Staphylococcal Enterotoxin B
Nature, 1964A C, BAIRD-PARKER, R L, JOSEPH
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