How to run Multilevel modeling in SPSS?

I conducted a a quasi-experimental study to compare the efficacy of two programs in four time-points (pre-test, post-test and one-year and two-year follow-ups) among couples (Distinguishable...

06 September 2020 7,509 3 View

How much time is required to use TissueLyser LT ?

I am using TissueLyser LT to extract DNA from plant tissue ( without using liquid nitrogen cause it's not available ) but I do not know how much time is required? I did this in 6 minutes at 50HZ...

15 August 2020 9,270 7 View

How to apply strain to a 3D in one direction in COMSOL?

I have a 3D block of an elastic material. I stretch it from one surface in one direction and for example I stretch it for 5 mm in Y direction. so my input load is either external stretch or...

05 April 2020 929 4 View

How can I calculate the yield of a chemical reaction?

01 December 2016 177 4 View

What are the drawbacks of chitosan thin films?

Can anyone introduce me papers about the disadvantages or the drawbacks of chitosan thin films? Thank you in advance

15 September 2016 9,351 1 View

What are the reasons of primer dimer formation in Real Time PCR?

I am working on gene expression. In Real time PCR experiment, a primer dimer is observed.

30 September 2014 8,180 9 View

Why does blocking with my immunogenic peptide cause nuclear fluorescence in ICC?

Hi all, I am validating a polyclonal antibody raised against human ANT4, through WB and ICC. In most of my controls, the antibody shows very little off-target binding, but when I pre-incubate the...

03 March 2021 5,999 3 View

Can linear DNA be used as template for site-directed mutagenesis?

Is it possible to induce site-directed substitution mutation by quick-change method on linear dsDNA? or it has to be cloned in some vector? If yes, should it be treated with the Dpn1 enzyme...

03 March 2021 401 4 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

PUC19 as a transfer plasmid for lentiviral delivery?

Hello, Is it possible to use pUC19 as a transfer vector to be packed in using the second generation viral particles packaging system( pMD2.G; psPAX2 plasmids)? As far as I understand it there is...

28 February 2021 4,868 2 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

Does RNAiMAX transfection reagent work in serum free medium?

I diluted siRNA and RNAiMAX in opti-MEM and added to the cells which they were in the growth medium. Is it a right way? or should I culture cells in the opti-MEM medium for a while and not in...

26 February 2021 10,041 3 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

How do I transfect a large plasmid into PC12 cells with nerve growth factor (NGF) receptor?

I have a large 16 kb plasmid, which I need to transfect into PC12 cells. Lipofectamin 2000 didn't work and with GFP alone the transfection rate is very low. I also tried the neon invitrogen...

25 February 2021 6,635 5 View