Can someone guide me how can i find the location of sample when I switch my microscop in bright field to the spectral imaging setting?

More Elmira Keramatfar's questions See All

Can someone help me to how to optimize the chromatin digestion for my CHIP experiment?

Hi everybody, I am doing CHIP experiment. The problem is that in my gel agarose I see alot of DNA with big size (longer that 1000 bp) which means there is alot of unfragmented DNA in my gel. I...

06 September 2020 1,507 5 View

Can someone explane the difference between spheroids generated from primary cells and spheroid produced from cell line?

Hello everyone, I see a lot of papers with the spheroid generation topic. I know spheroids are used widely for simulation of tumor condition in body. Can someone say which abilities does the...

31 August 2020 3,323 3 View

Does anybody know the difference of the effect of the dextran coated charcoal stripped serum (DCSS) containing medium and DCSS containg medium?

Hi everybody, I have cultivated the C4-2 cell line in double charcoal stripped serum containing medium. A lot of the cells do not attach to the bottom of the flask. If someone has experience...

24 August 2020 9,634 2 View

Does someone have experience with cultivation of C4-2 cells in 15 cm dishes?

I am culturing C4-2 cells in 15 cm dishes in different serumes of 5% FCS and 5% DCSS. since the cells are slow in attaching to the dish in DCSS compare to the FCS if someone has experience, can...

20 August 2020 1,535 1 View

Can someone explain how we can Ioptimize antibody concentration which I wanna use in CHIP-qpcr?

Hi everybody, I wanna use an antibody to determine the presence of a protein in my chip-seq experiment. Can someone help me how can do concentration optimization for antibody which I use ? Thanks...

19 July 2020 9,619 3 View

What will the future of sustainable production and consumption within non-durable goods industry?

Assuming that non-durable goods last less than three years on average, which direction do you think the world businesses and consumers are moving considering the huge environmental impact of...

27 May 2020 4,062 4 View

What are the most influential factors that can move world businesses towards practising environmental sustainability?

The industrial world is confronting the environmental side of sustainability. But, how do you evaluate the incentives - either from society or government- to convince them about sustainability...

09 May 2020 557 47 View

Has someone experience about getting different lifetime result by changing magnification of a sample?

Hi everybody, Does anybody have experiences like getting different lifetime result by changing magnification from a sample? Can this factor lonely has influence on the lifetime of a tissue? Bests

20 March 2020 8,745 3 View

Can someone suggest a sterilized, clean and trustable pig serum company for ordering?

Hi everyone, I currently did some experiments with a pig serum (notnheat inactivated), which the control negative of that showed bacterial contamination. As I have to filter it befor using and I...

01 December 2019 8,649 3 View

How much is the possible maximum dose for cells without showing toxic effect?

I extract the primary RPE cells from pig. As I see in several time extraction high contamination of bacterial in my cell culture flask in the 3rd day after extraction. Sometimes they survive...

18 November 2019 8,623 5 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 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

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Nicholas Edward Schlotter

The (Raman? IR?) microprobe systems normally are aligned to match the crosshairs in bright field viewing with the laser spot in spectral mode. Do you have a test sample of some kind that might help you find the location of the laser spot (edge of a Si wafer, for example).

Per Uhlén

Hello Elmira:

I recommend you to use gridded glas coverslips. You can search Google for "gridded glass coverslips" to find the type and brand that suits you.