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I have some specifictechnical questions regarding your secondary antibodies:
1) What level of cross-reactivity is there between thefollowing four antibodies(ie how specific for their IgG subclass target):
mouse mAb anti human IgG1-HRP #ab99774
mouse mAb anti human IgG2-HRP #ab99784
mouse mAb anti human IgG3-HRP #ab99829
mouse mAb anti human IgG4-HRP #ab99817
2) Of the following pairs of goat anti mouse secondary antibodies, which would have the least level of cross-reactivity (ie most specific for its target):
anti IgM ab97230vs ab98679
anti IgG1 ab98693vsab97240
anti IgG2a ab97245 vs ab98698
anti IgG2b ab97250 vs ab98703
anti IgG2c ab97255 vs ab98722
anti IgG3 ab97260vsab98708
3) What bulk discount can you offer if we wish to purchase antibodies from you with list price totalling over £1000 ?
London School of Hygiene & Tropical Medicine
Asked on Mar 29 2012
Thank you for your interest in our secondary antibodies. I will answer your questions as best I can now but cross-reactivity of the mouse anti-human IgG isotype antibodies will require data from tests which I do not have at hand. I will forward these to you when I receive them.
For the second question, each antibody of each pair is the same with regards to isotype specificity but differ with regards to species specificity. Please note that you have reversed the two anti-IgG1 antibodies in your list: ab98693 is pre-adsorbed for species reactivity, and ab97240 is not.
anti IgM ab97230 vs ab98679 - Same with respect to isotype specificity. (No reactivity with other isotypes was detected). Cross-adsorbed to remove reactivity with human and rat IgG. (Less than 1% reactivity).
anti IgG1 ab98693 vs ab97240 - ab98693 is pre-adsorbed for species reactivity, and ab97240 is not. As above, regarding isotype specificity and species reactivity.
anti IgG2a ab97245 vs ab98698 - As above, regarding isotype specificity and species reactivity.
anti IgG2b ab97250 vs ab98703 - As above, regarding isotype specificity and species reactivity.
anti IgG2c ab97255 vs ab98722 - As above, regarding isotype specificity and species reactivity.
anti IgG3 ab97260 vs ab98708 - As above, regarding isotype specificity and species reactivity.
Our bulk discount is based on number of units purchased, not price. The discount begins at 5% for 5-9 units, 10% for 10-19 units, and so on. A proforma invoice will have the exact amount of the discount, and we will be happy to provide a proforma before you place your order.
Answered on Mar 29 2012