Sudan black staining and TESPA coating, protocols?

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A variable moderating multiple relation - how can I test hypotheses using amos?

How can I analyse the relationship between five independent variables and one dependent variable, with a moderating variable influencing each of these five relationships? How can I test hypotheses...

03 June 2024 6,221 1 View

Any experience in fibroblast centrifugation?

We are experiencing different problems pelleting fibroblast: a) From the resuspension of the comercial vials (after defrosting, we resuspended in 5ml complete DMEM + L-Glutamin + FBS +...

28 May 2024 3,529 1 View

Fibroblast trypsinization in Hanks medium with Ca and Mg?

We are setting up fibroblast cultures in a new location and we had to change the mediums suppliers. At the trypsinization step trypsin did not work and we realized our hanks medium has Ca and Mg....

28 May 2024 6,052 2 View

Are the calibration curves of NO radical scavenging assay asymtotes?

Hello. I am here looking for help with the NO radical scavenging assay. I was working on setting up the assay with sodium nitroprusside and the Griess reagent as they do in most works. However, I...

27 May 2024 5,013 1 View

Inconsistente results with cell line LX-2, any advice?

Hi there! I'm working on my master's thesis and for my project I'm testing a new curcumin derivative in liver fibrosis. I'm working with the cell line LX-2 and have been having problems since the...

21 May 2024 2,171 0 View

Will ultracentrifugation be replaced as the most widely used method for isolating extracellular vesicles?

Ultracentrifugation is the most widely used method for isolating extracellular vesicles (EVs), despite the significant structural damage that EVs suffer during the process.

16 May 2024 9,432 1 View

¿What control can I use to inhibit the proinflammatory effect of LPS in macrophagues?

I want to evaluate the polarization to M2 phenotype in Raw Cells, I co-cultured the cell with LPS and my drug to see the effect of the drug to inhibit the proinflammatory effect of LPS, but I have...

05 May 2024 8,525 0 View

Scientific support for research in Dentistry University of Los Andes Venezuela?

Sirs. ResearchGate Receive a cordial and respectful greeting. For academic purposes only, we request collaboratively the following articles for one of our research professors, who is preparing...

05 May 2024 9,459 9 View

How can we prevent small peptides (1000 Da) from eluting out of the gel during staining in a peptide gel (tricine-SDS-PAGE, Shagger)?

How can we prevent small peptides (1000 Da) from eluting out of the gel during staining in a peptide gel (tricine-SDS-PAGE, Shagger)? There are different types of fixing solutions, but I'm not...

28 April 2024 1,522 0 View

Which are Australia regulation for disposal of produced water from oil and gas activities?

I am currently conducting research for my PhD on environmental regulations, specifically focusing on the disposal of produced water from oil and gas activities in Australia. I would appreciate any...

18 April 2024 1,544 1 View

Do I need specific antibodies to stain for a fusion protein?

I am staining some brain sections stored in cryoprotectant that express a Histone H2B- GFP fusion protein that were generated ~10 years ago. I know I need to enhance signal with an anti-GFP...

07 August 2024 5,338 2 View

How to determine positive-stained cells in FACS? Use isotype or unstained control?

To compare positive and negative cell populations in flow cytometry, should I compare unstained cells with antibody stained cells? Or with the isotype control? Most papers show comparison with...

06 August 2024 6,728 6 View

Can I multiplex a mouse monoclonal and rat primary for IHC (mouse brain tissue)?

Hi all, I was just wondering if anyone has experience with multiplexing a mouse monoclonal primary and a rat primary. I'm trying to multiplex by incubating them in the same well but was told by a...

06 August 2024 9,710 1 View

Senescence-associated beta galactosidase staining is False Positive in control group?

Hi guys If anyone is currently working on aging cells, you guys would like to give me some advice. I'm testing against biomarker (SA-beta-Gal), I encountered a false positive in the control group...

02 August 2024 6,735 1 View

Suggestions for the Annexin V Positive Control ?

Hello everyone, I am currently using washed human platelets to stain Annexin V as a procoagulant marker. Additionally, I am staining with PerCP-CD61 to identify platelet cells. So far, I have...

29 July 2024 8,624 1 View

How can I get clearer background for my western blot?

I am running a western on HIV envelope protein. The size is around 50Kda and I am using rat anti-HA for the first stain and a second stain of mouse anti-CA. Primary antibody dilution is 1: 1000...

29 July 2024 6,484 5 View

How many events should be counted for the analysis of apoptosis with nuclear staining with Hoechst 33342 whit microscopy ?

Greeting How many events should be counted for the analysis of apoptosis with nuclear staining with Hoechst 33342 whit microscopy ? Are 100 events count sufficient and three repetitions for...

25 July 2024 7,520 0 View

Ideal tissue thickness for multiple immunolabelling and confocal microscopy?

Hi there! I'm hoping to to look at co-localisation of cytokines and markers of different brain cell types (e.g., neurons, astrocytes, microglia) in juvenile rat brains (postnatal day 28) that have...

23 July 2024 2,844 1 View

What are those black/hollow structures?

Hello, I recently stained my cells with an Arf6 antibody. The healthy control looks pretty normal, while the disease group cells have abnormally large black structures in the cell body. Has anyone...

21 July 2024 1,044 1 View

Fixation Problem with cancer cells?

Hello everyone, I work with polyacrylamide hydrogels, which I fictionalise with sulfo-sanpa and collagen I to then plate lung cancer cells. The problem is that I lose a significant amount of...

19 July 2024 3,906 0 View