Other than Ficoll- paque plus method, what are the other reagents that we can use for Isolation of Monocytes from blood??

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Trouble shooting with his tagged protein expression in E.Coli?

i have issues in expressing a chicken protein in BL21 cells with his tag. I do not see induction even at 18 degrees. Any suggestions

15 February 2021 8,939 3 View

Two different gaussian width in QM/MM Metadynamics?

Is it wise to use two different gaussians for two CVs during QM/MM metadynamics simulations?. Example for 0.5kcal/mol Gaussian height, For CV1 width is 0.3 and CV2 is 0.15. Where both CVs address...

10 March 2020 5,287 3 View

What is the impact of correlation test in Image encryption ?

Is correlation test sufficient for proving the efficiency of the encryption scheme?

23 February 2020 3,524 4 View

What is the significance of image entropy ( plain image and cipher image) in image processing?

Whether increase or decrease in entropy of cipher image is good for encryption? How?Why?

06 May 2019 9,299 12 View

Can PCR master mix solution be prepared in advance and stored at -20C?

For doing PCR, instead of preparing the PCR mater mix solution each and every time, is it advisable to prepare it in a larger quantity and store it at -20C so that the PCR can be set up faster....

27 January 2019 7,112 19 View

What are the other options to play with audio files apart from shifting and transformation?

Any other specific operations with speech files?

23 September 2018 9,243 2 View

Can I stain cells with Annexin V after fixing with 70% ethanol?

I have treated cancer cells with inhibitors of cell cycle. In addition to looking at the stage of cell cycle they are in, I want to see if there is any apoptosis induced by the treatment. But I...

28 July 2018 1,242 3 View

How to measure the mesh size in COMSOL for PCF design for FEM analysis?

I want to know how to measure mesh size in COMSOL when are using initializing mesh than refined mode? Is that possible?

28 February 2018 4,418 3 View

Analytical formula of Natural Freqency of a composite with fixed-free (cantilever type) boundary condition?

I need to calculate the analytical relation for frequency of a cantilever composite beam, where one beam is prestressed on which an another non-prestressed beam is placed in a way to form the...

17 January 2018 2,773 9 View

What are the reasons for getting low value of R-square?

In my research I am getting a low value of R-square (0.253). What are the possible reasons for getting low value and How it can be interpreted?

16 September 2017 2,697 3 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

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

What is a good reagent for lentiviral plasmid transfection in HeLa cells?

I have been using Lipofectamine 2000 but was hoping there may be a better protocol or one for something like Lipofectamine PLUS reagent.

24 February 2021 1,633 4 View

Recommendations on homogenizers for RNA isolation?

I will be performing RNA isolation with frozen lung biopsy samples and am in the market for a tissue homogenizer. I am wanting a homogenizer that will fit in a 1.5ml tube. I was looking at the...

24 February 2021 3,623 3 View

How to improve RNA isolation?

Hi, I have been struggling with a weird issue for my RNA samples. I used the Qiagen RNA plus mini kit. For some reason no matter how careful I am with the washes, when I measure the RNA, I get...

22 February 2021 1,286 6 View

What might be the reason for obtaining two bands in plant genomic DNA extraction?

I got a thin band and a thick band i guess it would be the genomic DNA and the 260/280 ratio is 3.

21 February 2021 6,523 6 View

HPLC baseline failure (ACN/Water)?

My baseline increases without any explanation, it is only fixed by changing the solution B, will it be the column? Reagents? Bomb? Detector? Solution A: H3PO4 0.01% IN WATER Solution B: H3PO4...

21 February 2021 5,656 3 View

Looking for advices and tips to improve the staining and the gating strategy in human blood?

Hi, I am staining a human blood with CD19, CD3,CD14 and CD16. My gating strategy in FlowJo goes like this: - First, I gate a general population SSC-A VS FSC-A => Then gate for single cells, =>...

21 February 2021 5,724 4 View

Which transfection reagent is the best for plasmid transfection of MDA-MB-231 cell line, Lipofectamine based or other reagent suggestion?

I try to transfect MDA MB 231 cell line with a plasmid by PEI, unfortunately, the rate of transfection is low, and now I wanna find and order the best transfection reagent for this cell line and...

19 February 2021 828 6 View

Any information about dinitrosalisylic acid reagent end point color stability ?

I work on estimation of alpha amylase activity using dinitrosalisylic acid reagent If i put the reagent to stope the enzymatic reaction and allow the reagent to react with the produced reducing...

17 February 2021 7,402 4 View