Has anyone tried eBioscience Foxp3 / Transcription Factor Staining Buffer Set with TdTomato+ cells?

Hi all, I stained tdTomato+ cells (PBMCs and Jurkats) with eBioscience Foxp3 / Transcription Factor Staining Buffer Set for the foxp3 and I completely lost the signal of tdTomato. I tried to fix...

10 February 2021 5,863 2 View

How do I correct an inaccurate citation?

I was asked to verify a citation: Drugs and galencials, by D. C. Garratt, B.Sc., Ph.D (Lond.),... The author's first name is Emerson and the last name is Beeler. It was incorrectly cited as...

03 February 2021 5,272 3 View

Is there a way to get rid of TEA in a TLC plate in order to do proper staining?

Dear colleagues: I have been trying to establish a few HP-TLC methods in the lab. In general, for quantification purposes, I prefer CuSO4+acid charring, to primuline staining. Lately I have been...

20 January 2021 9,019 1 View

I have a challenge with a structure I optimized it's weight but the frequency constraint is not satisfied?

I know that frequency depends on material properties, geometry, support conditions and in plane loading. I have played around with these figures except that I maintained the same material steel...

26 December 2020 4,877 9 View

How can I coat reduced graphene oxide on glass substrate?

I dispersed reduced graphene oxide in NMP solution and tried to coat it on a glass substrate using dip coating system. But I am not able to get a uniform coating. Please suggest me a solvent and a...

26 November 2020 8,929 4 View

How can I measure the sheet resistivity of my reduced graphene oxide thin film?

I tried to coat my NMP dispersed rGO sample on the glass substrate by dip coating system. Then I characterized it with four probe system for sheet resistivity measurement. But I got a very high...

16 October 2020 3,696 3 View

Heat and plastic in MTBE lipid extraction?

When extracting lipids with the MTBE method, the indicated temperature is RT. In addition, drying the samples in a speedvac is mandatory due to the presence of water and such procedure is long and...

14 October 2020 9,776 2 View

Does anybody have an idea of how to solubilize hydrophobic peptides?

My hydrophobic peptide (12 AA) is soluble in 100% DMSO. Given that I should encapsulate it in hyaluronic acid nanoparticles, I need that peptide is soluble or partly soluble in water. Does someone...

03 March 2020 8,025 4 View

How do I choose which EEG trials to run in Common Space Pattern (CSP)?

I am currently working on a binary classification of EEG recordings and I came across with CSP. As far as I understand, CSP allows you to choose the best features by maximizing the variance...

20 January 2020 7,536 2 View

For researchers who have a P-97 Micro-pipette puller from Sutter instruments, can you help me get the values of factory pre-programmed Program #1?

We have lost the parameters of this program by mistake in our lab. And we need to reenter those, to our new P-97 puller. A picture would be good. I appreciate the help.

15 October 2019 5,710 2 View

How vaccines of covid 19 work?

Millions ask how vaccines of covid 19 be successful and safe, its here to explain generally how vaccine of pfizer work ,mRNA vaccines teach our cells how to make a protein that will trigger an...

28 February 2021 2,723 4 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

Best plasmid could be used as a standard curve for AAV titration?

I have been trying to have a good AAV titration for my production and I have tried different plasmids to set up as a standard curve but each one behaves differently. i am trying to use ITR for...

23 February 2021 5,167 3 View

How to control the variants vof covid 19 in second and third waves?

A the world find means to control covid 19 by vaccination ,new variants came to spread and make the world in fear and danger, to understand the conduct of these variants, es constantly change...

21 February 2021 3,080 6 View

Surprisingly low antibody titers against SASRS-COV-2 RBD in hamsters compared to mice?

21 February 2021 6,958 2 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

How to calculate the TCID50 when the highest CPE is 50% or less?

I am doing TCID50 to measure progeny virus and some treatments protected the cells in a way that the highest CPE observed is 50% or less. How should I do the titre calculation in that case? Thank you!

16 February 2021 8,768 1 View

How to estimate/know plant virus concentration to make a standard curve in ELISA after serial dilution?

Hello, I am trying to know tomato virus titer/concentration in samples and I will perform serial dilution of the positive control. I wanted to ask How to estimate/know plant virus concentration to...

13 February 2021 6,534 4 View

What are the possible effects of COVID -19 Vaccine/s on the persons already recovered from the disease?

Persons recovered from COVID -19 are having antibodies against the virus inside their bodies. They are having T cells already sensitized to the antigens of the virus. If they are vaccinated (may...

12 February 2021 4,106 22 View

What is the reason, we got both test and control band on LFA in negative sample?

I am working on Lateral flow assay for virus detection by carbon conjugated polyclonal antibody. We got a high intense band in both test and control line on LFA in negative sample used as buffer....

11 February 2021 6,558 2 View