Does any know the difference between psPAX and PAX2 LV plasmid?

I want to know which one is more suitable for dendritic cell transduction. I see that in: https://www.cell.com/cell/pdfExtended/S0092-8674(15)00829-6 PAX2 plasmid is used for dendritic cells...

31 December 2018 3,696 3 View

Is there a difference between human and mice codon optimised sequences?

I have a Cas9 plasmid which is human codon optimised. Will there be any difference in Cas9 protein expression if this is expressed in mice?

07 August 2018 5,808 0 View

How to add +/- signs in front of calculated mean value in Excel?

I'm not referring to error bars. I want to add +/- signs in front of my mean (just like in a paper), without having to go to insert symbols and inserting them individually. Are there any keys to...

10 November 2013 8,421 9 View

Is SOD and CAT activity present after 24h of autopsy provided its stored at -20C?

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09 October 2013 5,827 1 View

In which solvents are beta-carboline alkaloids soluble?

I tried it with water, 5% DMSO but it seems to insoluble in those solvents.

09 October 2013 6,216 7 View

Why are standards for phenolics dissolved in methanol for HPLC?

Why are standards for phenolics dissolved in methanol for HPLC?

09 October 2013 350 9 View

Identifing the epididymal luminal protein/s in lizards?

08 September 2013 2,651 4 View

TLC trouble shooting

I'm running TLC with silica sheets. As the solvent travels quarter way up its movement changes such that we no longer see a straight line of solvent but rather a squiggly line. This largely...

08 September 2013 7,048 15 View

What are your thoughts on my observations of STZ in fed and fasted conditions?

What should be the nutritional status of wistar rats before the injection of STZ.? I came across this very interesting paper titled 'Streptozotocin is equally diabetogenic whether administered to...

07 August 2013 6,918 1 View

what does 30% w/v of H2O2 mean?

what does 30% w/v of H2O2 mean? does it mean 30g of H2O2 is present in 100ml of that solution?

07 August 2013 529 17 View

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

RIA. How to measure?

When you use RIA, with a control the unknown sample with antibodies, you bare in mind the binding sites of the antibodies. However you still need to measure labelled antigen (radioactive) and not...

28 February 2021 2,133 3 View

What is the most suitable resuspension buffer for TCA/acetone precipitated protein?

I need to extract protein from fermented carbon sources for Bradford assay. Most researchers experiencing insolubility of pellet in resuspension buffer. Please assist me to select most suitable...

26 February 2021 7,129 3 View

EMSA troubleshooting. Protein-DNA complex not migrating, cold probe lane with multiple bands. Can anyone help?

I'm running an EMSA to show the DNA binding activity of recombinant proteins versus the Wild type. Previous assays run by my research group using a different test system show the protein-DNA...

24 February 2021 8,325 1 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

Is anyone working on a project focused on immigrants/newcomers working in the hospitality industry and how they have been impacted by COVID?

The on-going Covid-19 pandemic has had devastating economic effects on many industries. However, few have suffered to the same extent as full-service restaurants. Numerous studies have shown that...

24 February 2021 9,496 4 View

What is the optimum time and temperature of blanching and pre-frying potato for frozen fries?

I am helping a local home industry for developing frozen fries from their local farm. I want to know what is the optimum blanching and pre-frying temperature and time for processing. Please also...

23 February 2021 1,616 5 View

Can two EC50 values with different hill slopes be compared?

Hello, I fit a classical dose response curve Y=Bottom + (Top-Bottom)/(1+10^((LogEC-X)*HillSlope)) to my data (not related to inhibitors etc). The model I use is purely qualitative but it fits...

23 February 2021 8,155 5 View

Will SARS-CoV-2 Spike be broken into S1 and S2 by denaturing conditions?

Hello, I am performing a western blot of my SARS-CoV-2 Spike-pseudotyped lentiviral particles. I denature my virus by adding concentrated virus to 2X Laemmli buffer at 1:1, then boiling for...

17 February 2021 4,844 4 View

What is the proper in vitro culturing method to get information about the activation of innate immune cells by VLPs?

Dear All, I am interested in studying the response of immune cells against virus-like particles (VLPs). I used the PBMC in vitro assay and treat it with the VLP using PHA as a positive ctrl while...

16 February 2021 1,337 2 View