Why must
1. electrophoresis of the protein sample, and
2. transfer to nitrocellulose
precede the actual probing of the sample with an antibody?
Electrophoresis must occur to seperate the protein while the transfer to the membrane allows the antibodies to properly attach to the protein that you are interested in.
Antibody – antigen interactions might involve all types of chemical bonding, except which one? Explain.
07 August 2017 2,293 5 View
Explain the statement “All immunogens are antigens, but not all antigens are imunogens.”
07 August 2017 4,712 7 View
Why Immunohistochemistry requires a conjugated enzyme, whereas immunofluorescence does not. Explain the difference?
07 August 2017 945 5 View
An investigator wanted to produce rabbit antiserum specific for mouse IgG, so she injected a rabbit with purified mouse IgG. However, to her dismay, the antiserum reacted with all isotypes of...
07 August 2017 8,415 7 View
I am planning to run an ELISA soon but I have a question regarding sample preparation. If I don’t know the working range of my samples for the ELISA, should I just add the samples to the plate...
07 August 2017 5,462 4 View
What are some common treatments that could be used to disrupt the antibody-antigen complexes?
07 August 2017 5,565 4 View
What is the function of the enzyme bound to the secondary antibody?
07 August 2017 8,198 9 View
What is the need for serial dilution of the sample when performing an Elisa?
07 August 2017 1,692 1 View
What are the differences and similarities between western blotting and immunohistology?
07 August 2017 2,178 3 View
The indirect method requires use of a ‘secondary’ antibody, whereas the direct methodology does not. Explain the difference.
06 July 2017 3,047 4 View
I got these smeared bands quite often lately. We typically run the gel at 140V with a 10-12% gel and do a wet transfer at 220 mA for 1.5 hr in cold room. We also noticed some dirty spots/dots (see...
10 August 2024 7,480 3 View
Can anyone share any reference that gives mouse specific CD3 antibody sequence. I have been searching for this since few days and no luck. Thank you very much
08 August 2024 9,157 4 View
I'm working on selecting antibodies against a recombinant protein that has a His-tag. My idea is to first bind the recombinant protein to a HisTRAP column and then use this column for an affinity...
07 August 2024 505 3 View
Hi everyone, Recently I have been conducting Dynamic Light scattering experiments in a micellar solution at 5 and gel at 37 degrees of Celsius with latex particles of diameter 190-500 nm. While...
01 August 2024 1,168 4 View
We have a lateral flow test on Sartorius 140 NC. The conjugate is gold-monoclonal antibody. Using different control lines (GAM, protein A, protein G) we get a very strong leading edge with reduced...
31 July 2024 4,510 3 View
Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...
30 July 2024 906 2 View
I am developing an ELISA kit for rotavirus A (G1P8 and G1P6). Does anyone know the weight (ng) of these two strains? Or to help me find their weight?
29 July 2024 3,138 2 View
I designed 2 dual hybridization probes for my single SNP. where I attach my fluorophore 5'-FAM-nnnn-BHQ1-3', and 5'-HEX-nnnnnn-BHQ2-3'. I need to run it on the MIC RT PCR machine by Biomolecular...
28 July 2024 5,658 0 View
I am performing IgG purification and I have to show my results on SDS-PAGE. I use 10% tris glycine gel and prepare the samples under non reducing conditions. I am new to antibodies and therefore...
23 July 2024 6,664 6 View
Greetings. I’m currently running a nested pcr for giardia. My mastermix comprised of 3mM Mgcl2, 5unit of taq polymerase, 0.2uM of forward and reverse primers each respectively and 0.2mM of dNtp...
22 July 2024 9,761 5 View