Not column based DNA extraction kit for stool/soil samples?

04 May 2017 5,147 4 View

Which molecule(s) of LPS bind a Silver Stain?

I'd like to understand some chemistry behind silver staining.

05 June 2014 275 2 View

Can Lipid A be observed on Western Blot or SDS-Page? Would it attach a monoclonal antibody or adhere to a dye?

Qualitative analysis of LPS

08 September 2013 9,302 4 View

What essay would you recommend for vaccine reference monitoring?

Qualitative and or quantitative analysis of endotoxin or proteins

06 July 2013 421 0 View

Is there any chemical (acid/base hydrolysis) or else that can be used to degrade LPS?

I just want to see the difference between LPS bands in bacterial cells and degraded LPS bands on an immunoblot.

06 July 2013 8,956 0 View

Does anybody know the effect of aluminium hydroxide (which is bound to the antigen) on protein extraction and/or protein separation on PAGE?

There should be lots of proteins in the vaccine (in oil adjuvent) as we can observe millions of cells with Gram Stain; however, only a few protein bands showing up on Western Blot. Could...

05 June 2013 5,503 0 View

Resolving proteins from a vaccine?

Does anybody know a good way to see proteins in a vaccine? I see only a couple of bands running protein gels from a vaccine, while I see lots of proteins on simply bacterial cells. What effect do...

04 May 2013 5,568 1 View

How do you develop HRP-conjugated 2 antibody?

I don't have a biotinylated secondary antibody, but have a HRP conjugated one. What do you develop it with?

01 February 2013 6,635 2 View

How to revive hybridomas?

I'd like to receive some input from people who worked with hybridomas. I need to resurrect them from being stored at -70C for about 5 years. I've never worked with hybridomas before and would...

31 December 2012 7,931 2 View

How do I increase the yield of my PCR product?

Hello, We would like to increase the yield of our PCR product. We are running a series of PCR reactions that is targeting ~1.1kb sequence. We begin each reaction with ~400pg of template DNA...

02 March 2021 4,029 3 View

Research on Supply Chain Management in Indian context?

Hi, I am planning to apply for the PhD degree in the Supply Chain Mgt. with specific area of "Cold Storage warehouses" during Pandemics and wars. Where lock downs and shut downs are frequent....

02 March 2021 285 2 View

PACYC PCR not working after several attempts. Would anyone have any suggestions?

So, I have been trying to run a pACYC PCR which will be used later on for a Gibson Assembly. However the PCR is not working. I have already tried gradient PCR and changing extension time; however...

02 March 2021 1,146 2 View

Does anyone have a recommendation for yeast reporter gene plasmid/protocol?

Hi, could anyone recommend a plasmid and/or protocol for reporter gene assay in S. cerevisiae? I want to assess the effect of growth conditions on a transcription factor, so I want to clone it`s...

01 March 2021 210 1 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

Why might my GFP tag be dissociating from my plasmid after transfection?

I have a set of stably transfected cell lines all transfected with plasmids containing GFP tags on the C terminus. During a western blot using anti-GFP antibody, one of my plasmids has dissociated...

01 March 2021 9,310 4 View

How to address this issue in the analysis of Real-Time PCR results?

To dear Researchers, I was analyzing a series of concentration for estimation of Real-Time PCR efficiency. The concentration was 1:10. I used MS-excel to evaluate Slope. The result of slope was -8...

01 March 2021 8,683 4 View

No title

Does anyone have the experience of using Taq Man probes in the QIAGEN Rotar- Gene qPCR machine?

01 March 2021 5,311 1 View

Expression cloning by using cDNA,do I need to modify the cDNA first?

I am going to have a expression cloning of mammalian gene by using shuttle plasmid to transforming the E.coli However I don't know I should only inserting the Coding sequence ,or I can...

28 February 2021 5,440 3 View

Problem with shRNA transfection. Why are only two plates getting contaminated instead of all?

I transfected my LNCaP-WT cells with 3 shRNA plus their NTC two weeks ago and split two puromycin selected cell plates on Friday last week(Feb 26). I checked for GFP in the cells, and they all...

28 February 2021 4,949 3 View