How to do mono formylation of N,N-diethyl-3-methoxybenzamide?

I have attempted the formylation of the above mentioned compound using a very well reported protocol using secondary Butyl Lithium and TMEDA at - 78 degrees Celsius. I have done it quite a few...

08 February 2021 2,793 2 View

What is the minimum number of cells required for fluorescence in situ hybridization?

I have to perform a FISH experiment with limited number of cells and I am trying to estimate the minimum number of cells required to do FISH. Cells are from mammalian cell line. I failed in doing...

12 January 2021 7,887 1 View

Can you give me some Information about the generation of ROS in marine surface water?

Reactive oxygen species is a very new term i think

23 December 2020 8,416 4 View

Can someone suggest me a wear detection method for a pipe which goes under intense heat and pressure at intervals?

I am looking for a wear detection method for a pipe that goes under intense heat and pressure for short instances at intervals. this process has an average cooldown time of 8 seconds between each...

08 October 2020 3,776 2 View

Single-cell cloning from SkBr3?

Did anyone tried single-cell cloning from SkBr3 cell line. I am failing in growing cells post single cell seeding in wells. Any help is appreciated

27 September 2020 8,762 4 View

What to do when RT PCR becomes positive again after 15-20 days of 1st sample positivity?

We are getting some patients who were initially positive of RT PCR for Covid. But in retesting after 15-20 days or even 20 days after those patients remain still positive. Is it for dead RNA...

17 August 2020 9,552 9 View

How to calculate % sequence identity using Clustal W?

I am calculating % epitope conservation for different mammalian antibodies against zebrafish. I have performed the Clustal W for antigenic peptide used in raising the antibodies against the...

05 August 2020 6,399 5 View

What is the Source of Harmonic Power ?

Consider a sinusoidal supply at fundamental frequency as shown, with a series inductive reactance leading to a bus. Let a diode rectifier load be connected to the bus. The switch Sw for resistive...

24 June 2020 8,175 27 View

Why does not graphene exist as a proper 2D sheet?

We know that graphene is the strongest material as it has high tensile strength. Then why does it exist as flakes? Why we cannot make a complete sheet out of graphene?

18 May 2020 8,820 4 View

What is the best book on Game theory from the perspective of Computer Science and Engineering?

I do not know much about game theory. I am finding a book where different protocols and algorithms of computer science have been analyzed using the concept of game theory.

17 May 2020 4,774 7 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

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

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

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

Is it possible that Cancer cells could survive in heparinized blood for 48 hours?

Hi everyone, I am just wondering if we incubated 200 microliter of whole blood with 50 microliter of cancer cells(1bout 5000cells) do you think that cancer would survive for 48 hours?

23 February 2021 3,840 3 View