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

No title

16 December 2020 9,657 5 View

Tools for analysis of interaction between lncRNAs and proteins/miRNAs?

Hi! I would like to know what tools I could use to analyze interactions between a new lncRNA and possible protein/miRNA targets. The biggest problem I had to find such tools is that the RNA we...

20 November 2020 8,331 3 View

I would like to ask some questions about concentrations of Urea 3M and 8M in two experiments?

I would like to ask if anyone knows if concentrations of Urea 3M and 8M can interfere with protein purification at Ni-NTA and Glutathione Sepharose 43 resins. Another question, Urea, at 3M and 8M...

17 November 2020 5,014 3 View

I would like to ask if anyone among you knows what is the ideal concentration of TFA to use at a chemical synthesis of peptides?

During a chemical synthesis of peptides by the F-moc method, the following happened: all the initial steps of the synthesis occurred as planned, but in the cleavage, TFA is used. In the lab, there...

02 November 2020 2,997 8 View

Can I use generalized linear mixed model to "fix" data absence?

I have some data of the diet of an omnivorous fish diet collected over 20 years. This data is divided in two seasons, the dry period (drought) and the wet period (flood), and I want to analyze the...

10 October 2020 6,546 6 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Interested to stain mice tissue with WGA 488 conjugate, anybody has a protocol to recommend?

Interested to stain mice brain tissue with WGA 488 conjugate, appreciate if anyone willing to offer me some guidance or suggestions! Thank you!

28 February 2021 3,951 2 View

Anyone know of a good progesterone antibody?

I am looking for a good progesterone antibody to quantify levels of progesterone in zebrafish. Applications would be ELISA, and immunohistochemistry.

28 February 2021 5,929 2 View

B-mercaptoethanol (BME) protocol?

Hi everybody, I have been running a multiplex IHC which allow me to stain the same tissue with different markers (Primary Ab + Secondary conjugated Ab) (AF487, AF555, AF647). Since I would like to...

27 February 2021 5,028 2 View

Why do my MCFs not form monolayer?

Hello, I am looking for some expertise on culturing MCF7s. I purchased them from ATCC and I have been following all media and culture conditions. Media is EMEM with 10% FBS and 10ug/mL of...

27 February 2021 3,904 2 View

Can Ethovision store the generated data and video recordings directly to NAS system?

The size of data generated by Ethovision is huge. Having NAS system for data storage seems to be a good option, I am wondering whether Ethovision can directly store the data to the NAS system...

27 February 2021 6,350 2 View

How to compare 2 samples recruited with different sampling methods?

If I want to compare characteristics of 2 groups of patients, one group is recruited from a random sample of the general public while another group is from a sample with a fixed gender (male to...

26 February 2021 3,526 3 View

Is there anyone who experienced with cytotoxic effect of Hoescht 33342 dye?

Is Hoechst toxic to cells? In general, it is known as non-toxic. I am working with dsRED MDA-MB-231 cell line. I applied it for my PDMS-based microfluidic platform, for this reason, I incubated...

26 February 2021 9,119 3 View

Why my agarose gel staining sometimes looks not homogenic but like gradient (see the figure)?

I am worried about this overexposure of the upper part of the gel in the picture. Is it possible that this is the result of too much concentration of ethidium bromide? Why is there such a big...

25 February 2021 8,140 3 View

Markers of mitochondrial activity in FFPE tissues?

Hello everybody, Does someone have any experience with assessing/extimating mitochondrial activity on FFPE tissues? Precisely, no TOM20, ATP5B, etc: we are trying to get an approximative idea of...

24 February 2021 4,618 4 View