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

Why is my qPCR suddently not working?

I've been working with qPCR for some months now. I amplify 2 genes (PSEN2 and HN1), and the protocols are optimized for both and have been working fine. The other day I amplified HN1 for some...

21 February 2021 3,437 3 View

Can ethanol be used as an analgesic?

If ethanol has analgesic properties, why isn't it used for clinical purposes?

18 February 2021 8,227 4 View

Acid phenol:chloroform (25:24:1) for RNA extraction instead of (125:24:1)?

Hi everyone! I am about to extract RNA for RNA sequencing assays and my Invitrogen kit/protocol...

14 February 2021 1,755 3 View

Are there any public datasets of consumer complaints about service industries at the European level?

06 January 2021 1,718 2 View

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16 December 2020 9,657 5 View

Why does a Nested PCR protocol amplify samples and not amplify positive control?

I have this problem. Today I used a new positive control of an isolated NC-1 strain in cell culture and the problem persists. I performed a serial dilution test to test the sensitivity of the...

08 December 2020 6,252 2 View

How to avoid the formation of traces and dimers in DNA gel electrophoresis?

07 December 2020 3,052 3 View

Is the pipetting order of the positive and negative controls in the PCR important to avoid in a possible contamination?

I have been watching bands form on my negative controls. I have already changed all reagents, optimized the hygiene of materials and the environment and increased care in pipetting.

07 December 2020 9,090 3 View

Best methodology to calculate food footprint in a university campus through students inquiring?

Hello, Considering sustainability and environment negative impacts of animal based products, I would like to calculate food footprint in a Portuguese university campus through students...

05 December 2020 9,098 3 View

Should the AUC in a concentration-time graph of a subcutaneous implant be roughly the same for poeple?

I have 2 concentration time curves of a subcut drug implant. the first group has a peak around the 50 day mark where as the second group does not. Both groups received the same implant by the same...

10 February 2021 2,305 3 View

How do I prepare and store insect samples for JH measurements?

I need to preserve termite samples for future quantification of juvenile hormone in their bodies. Or extract the Juvenile Hormone and keep that samples stored for future quantification. I may need...

09 February 2021 1,995 1 View

Separated objects vs Non-Manifold Assembly?

I'm trying to do a simulation between the Maxilla and the Mandible I converted the Dicom file from the CT scan to a CAD module and module the articular discs via 3d software. I have two options...

08 February 2021 8,731 2 View

How to perform CV by using potentiostat?

I have deposited a metal oxide thin film of glass plate, A conductive thin film was also deposited on the glass substrate before the deposition of metal oxide film. How can I perform its CV from a...

01 February 2021 7,710 3 View

What is the best concentration of Pam3CSK4 to coat a dish to activate with THP-1?

Hi everyone I am trying to coat a glass-bottom dish with Pam3CSK4 and plate THP-1 cells to measure IL6 with ELISA from the supernatant. I wondered if anyone knows a good concentration and...

21 January 2021 2,593 1 View

In a microgel-DTPA suspension (in water), what can be added as a counter to TMEDA to adjust its pH to 6?

I have added a little extra TMEDA to the microgel-DTPA suspension and has reduced its pH. How can I bring it to pH 6?

04 January 2021 6,743 1 View

Any Custom Peptide Synthesis Companies In India? Custom Peptides Manufacturing Lab in India?

We are looking for many Custom Peptides in India, with good quality for our Bio-pharmaceutical research. Please suggest us best Custom Peptide Synthesis and Service Providers from India? Expecting...

31 December 2020 6,516 7 View

Best purification method for recombinant protein in BL21?

Hi I need to purify a recombinant protein (IL6 21kDa). It's been produced in E.coli BL21 with a T7 expression vector, but it does not have a tag as yet. I was thinking of adding a his-tag and...

09 December 2020 2,200 8 View

Recombinant Interleukin 6 western blot, non specific bands?

Hi I've been trying to produce some recombinant human Interleukin 6. I sub-cloned the gene for human IL6 into a Promega T7 Flexi vector (native gene no tag yet) and confirmed sequencing and...

09 December 2020 2,340 4 View

How to detect TGFb and IL10 from activated Tregs?

Dear colleagues! I plan to check cytokine production by my WT and KO Tregs following activation, particularly, IL10 and TGFb (TGFb1 or LAP, exactly) as these are reported to be the major...

02 December 2020 9,424 5 View