What are the most important explanatory assets ?

06 December 2020 5,474 2 View

What are the methods of writing the interpretation ?

06 December 2020 3,267 3 View

Cell culture techniques: how to deactivate a viral infection while preserving cytokine storm markers?

Hello, I am trying to measure the cytokine storm markers following SARS-Cov-2 viral infection of lung cells and macrophages under different conditions. However, finding a safe way to deactivate...

05 November 2020 1,174 4 View

How can I calculate the am ount required to prepare the following buffer?

ammonium sulfate 0.17 M - polyethylene glycol 4000 25.5% (w/v) - glycerol 15% solution How can I calculate the amount required to prepare the following buffer? I want to prepare 1000 microliter

03 October 2020 4,018 5 View

Why some viral proteins are unable to express and purify in pET28a expression and purification system?

Dear All, I am trying to clone and purify codon-optimized viral proteins using pET28a expression system. Even though I have the perfect insert in the recombinant plasmid, there was absolutely no...

24 September 2020 3,635 8 View

Non fluorescent E. coli GFP?

I Have a problem with E. coli GFP, I am culturing them in LB medium/ampicillin + IPTG, but not all the cells fluorescent after UV excitation (fluorescence microscope) although they grew in the...

15 September 2020 4,636 1 View

How are parents guiding their children with learning difficulties?

Parents' educational level is essential in raising the level of education

14 September 2020 6,306 4 View

Is it possible to integrate ratio measures with ordinal survey scale?

24 June 2020 205 1 View

X-ray Experiments for antibody S309 Zero ini on COVID-19 ?

18 May 2020 3,666 6 View

Why encrypt Bloom filter and query in a different way in the following paper in searchable encryption?

I was read in paper in searchable encryption that encrypt bloom filter index in the following way: 1- generate secret key to encrypt bloom filter and query is: the secret key sk (M1, M2, s ),...

03 March 2020 1,448 5 View

No title

02 March 2021 3,060 3 View

Issues with Permeabilization during Flow Cytometry?

Hello Everyone. Currently I am working to characterize macrophages in the myocardium after ischemia-reperfusion injury in rats. Due to the low total cell number isolated from rat hearts I can...

01 March 2021 3,867 3 View

Which cell line should we use to perform biological dosimetry experiments?

We are preparing some experiments based on irradiating cells under different conditions in order to evaluate the effects in terms of DNA damage, genetic expression, etc. As our project is...

01 March 2021 3,355 3 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

Do you need the CMV enhancer before the CMV promotor for a proper function of CMV on the gene that follows?

I'm a student and I have to produce a cell line with a knockin for the NRF2 gene with GFP. I have to put a promotor in front of the GFP because the gene will be too far away from the promotor of...

28 February 2021 7,127 2 View

What could be some reasons why unstimulated monocytes are getting activated?

Im doing PBMC isolation -> CD14+ enrichment using magnetic beads -> stimulation setup. My negative control is just cells in cRPMI but they seem to get activated over and over again.

28 February 2021 7,883 3 View

No title

28 February 2021 9,936 2 View

Has anyone had luck using cell lines other than HEK 293 (such as COS1) to package lentivirus?

I am looking to package lentivirus in endothelial cells but I am opposed to using 293 cells due to personal ethics regarding the source. I have done some reading and saw that COS1, COS7, & CHO...

25 February 2021 3,030 1 View

Unknown debris sheets observed in cell culture flasks?

Hi, We culture neural progenitor cells in T175 culture flasks coated with PLO-Laminin. We have successfully grown these cells with our protocol for months. Recently, we observed large sheets...

25 February 2021 3,443 4 View