I am trying to stably knock out a gene in SY5Y cells using the CRISPR/Casp9 system. After selection with puromycin 99.5% of the cells are dead. Why?

02 March 2016 4,485 13 View

Is it possible to dissolve and store lipids in DMSO alone?

I read papers where they dissolve lipids in Ethanol or in Ethanol/DMSO (1:1, v/v). Is it also possible to store glycosphingolipids in DMSO alone to avoid possible ethanol evaporation?

11 December 2014 7,514 10 View

Antibody reaction?

In my opinion it is not feasible to use mouse anti-human antibodies for mouse cells or mouse tissue. But I am not an expert in immunology and I saw publications where people used mouse anti-human...

04 May 2013 1,654 1 View

uPAR (urokinase receptor) knockout mice.

Is there anyone working with uPAR KO mice who could help me by providing two females and one male to grow my colony again? Of course, we will cover all expenses.

01 February 2013 5,374 0 View

mTORC1 activation

How do people usually check if mTORC1 is activated? By checking if S6K1 is phosphorylated? How does mTORC1 get activated? Also by phosphorylation or is it transcriptionally regulated?

11 December 2012 8,187 3 View

How to solve a problem concerning uPAR KO mice breeding?

Does anybody know anything which can be done to get them back to breeding? Are they too old or could there be another reason as to why they are not breeding?

10 November 2012 8,607 10 View

Detecting sr-b1 in liver cells, Huh7

We have major problems detecting sr-b1 in Huh7 cells (liver cells) using the antibody from NB400-104 from Novus Biologicals. Does anybody have experience with this antibody concerning lysis of the...

03 April 2012 6,728 7 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

Can anyone help with Schistosoma identification?

Can anyone identify what kind of Schistosome species this might be? Morphological features of cercariae and adults resemble Trichobilharzia, though I am fairly new to the field of parasitology...

25 February 2021 7,760 6 View

IF troubleshooting: looking at an intracellular protein that localizes to the cell's and how to reduce increase in signal due to cell ruffles?

I am currently trying to stain for PI3KBeta in MDA-MB-231 cells. My current issue is that 1) beta stains all over the cell and 2) there is an increase in signal at the edge of the cell and this...

24 February 2021 8,582 1 View

How to manage western blot for proteomics data validation?

Hi Everyone, I am a bigginer in western blotting and I am trying to use it for validation of my proteomics data. I have: two regulated proteins with molecular mass of 40 and 73 kDa one control...

23 February 2021 6,671 4 View

How to clean up TEM grid with plasma cleaner?

I need to clean the hydrocarbon contamination on the carbon substrate of TEM grid. However, I heard that substrate could be broken by the powerful plasma. My substrate is pure carbon, with ~3nm,...

23 February 2021 3,262 5 View

How we can measure Kemp % in wool without using of benzene?

Would you please let me to know about the methods for measurement of medullation and Kemp % on animal? My problem is that the wool sampling and sending to laboratory is not possible. So I would...

21 February 2021 7,260 4 View

Specify the Burgers vectors for dislocations, which cannot be uniquely identified.?

1. A bcc metal single crystal was sliced along (1 -1 0) plane for TEM study. Assuming that the TEM available is equipped with a goniometer stage which tilts up to 45o. The Burgers vector of...

20 February 2021 2,370 1 View