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Dictionary » O » O antigen O antigenDefinition noun (microbiology) A repetitive glycan polymer attached to the core oligosaccharide of the LPS layer of certain bacteria; a somatic antigen that comprises the outermost domain of the lipopolysaccharide (immunology) A major blood group antigen indicating the presence of H antigen and the lack of additional antigens, particularly N-Acetylgalactosamine (found in A antigen) and galactose (in B antigen)
In microbiology, O antigen renders additional protection from the antimicrobial action of certain antibiotics. Without it, the LPS becomes hydrophobic and therefore is more susceptible to the action of hydrophobic antibiotics. 1 In immunology, blood types are determined by the presence of blood-group antigens. In humas, there are three types of blood-group antigens, namely H antigen, A antigen, and B antigen. They differ basically on structural component.
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Results from our forumRe: Difference between ICC and IF... a fluorescent tag to detect the first antibody. The two-antibody approach is cheaper than making a custom-labelled fluorescent antibody for every antigen you need to detect. For instance, the first antibody (called the primary antibody) might be raised in a rabbit, while the second antibody (the ...
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Antigen-Antibody reactionKumar dude you can perfectly google this or even better, google imaging so 3 ways antibody work 1. antibody directly inhibit antigen google image will answer you 2. recruit complements google image 3. recruit those big cells that eat the antigens up. google image
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ELISA readings after booster shotOh yeah, forgot to add, if you are using antigen reagent from a supplier, did you use the same supplier pre and post? Also the same lot number of antigen reagent? Small variability in antigens can sometimes occur with new reagent or between lots ...
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ELISA readings after booster shotCould it be that the maximum amount of antibody antigen reaction readable was already there pre booster in the higher dilutions, while there was more antigen available for reaction in the testing at the lower dilutions? Hope my meaning is clear. ...
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