Can I inactivate restriction enzymes after freezing the digestion product?

I performed a digestion that ended up at midnight, but forgot to inactivate the enzymes (HaeIII and RSAI) before freezing the products. I plan to run a gel to differentiate yeast isolates. Can I...

09 December 2020 3,551 3 View

Frozen spheroid section is not staining (fluorescent + H&E), any ideas?

I have cryosectioned a spheroid which was grown in collagen and agarose and then embedded in OCT Tissue Tek solution before freezing in a dry ice ETOH bath of liquid N2. The sections are very...

08 November 2020 3,299 3 View

Anyone with experience on DNA extraction from biopsies for microbiome analysis?

We shall collect biopsies from skin/hoof of animals for bacteriological microbiome analysis. We need suggestions on DNA extraction kit that may be used for this. We prefer to keep the biopsies in...

24 September 2020 6,845 4 View

How can I remove an article I have uploaded with a wrong title?

24 February 2020 6,806 3 View

Has anyone used a Phalloidin stain that permeates the cell membrane of living cells (rat cardiomyocytes)?

In this particular experiment, it is not possible to perform any permeabilization protocol that weakens the sarcolemma or cytoskeleton, so I would have to rely on finding a Phalloidin that can...

09 January 2018 2,642 4 View

Any tips in conducting the sulfide method using the 'Standard methods for the examination of water and wastewater'?

23 January 2017 3,448 3 View

How do you calculate N2O and CO2 flux emissions collected at different time? What equation(s) would you suggest?

This is a soil incubation experiment in situ. Collection occurred throughout a period of time. Please provide ideas of one or more equations that you could suggest to transform my values into...

21 September 2016 6,857 4 View

Are there any other tracking methods aside from satellite tagging that are just as efficient in tracking the long distance movements of whale sharks?

The migratory patterns of Rhincodon typus is very interesting to me and I have read that satellite tagging is the method typically used when tracking their movements. However, I would like to know...

07 July 2016 3,382 2 View

How to deal with mixed methods studies in mixed methods synthesis?

I have been reading about mixed methods synthesis techniques (Sandelowski et al 2006, 2012 and Joanna Briggs Institute 2014) for systematic review. I think a segregated synthesis approach will...

05 June 2015 138 5 View

What is the minimum fractionation method that is needed for whole mammalian cell lysate prior to Orbitrap-MS?

01 February 2015 9,914 5 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

How to best wash a 96-well plate containing microplastic?

I am planning my protocol for my dissertation for an experiment quantifying bacterial (E. coli) biofilm formation on micro-plastic (5mm discs of polyethylene bags) by conducting a crystal violet...

23 February 2021 7,868 2 View

How can I improve the concentration of banana fruits extracted RNA?

Currently, I'm working with banana fruits. I've tried to do RNA extractions with different methods, and I've gotten total RNA without contamination, but I couldn't get a high concentration of...

22 February 2021 6,126 2 View

3T3-L1 cells, is this a bacterial contamination or a cross contamination with different cell line? or something else?

Hi, I am experiencing some difficulties with 3T3-L1 cells culturing recently. I am working with 3T3-L1 cells for almost 4 years now and have seen bacterial contaminations/ unhealthy cells and...

13 February 2021 4,040 3 View

What is the method of removing RNase contamination from a filter paper surface?

I am working on a biosensing project on paper substrate, however, it is found that the RNase contamination occurs on the filter paper. Might I ask is there any method to clean the paper surface...

12 February 2021 3,926 3 View

Can I simply dilute 25% NH3 solution to 10% solution by pouring water in tank and circulating with pump?

Is there any heat of dilution which I need to take care by putting some circulation cooler? Will there be any significant ammonia emission in the process?

09 February 2021 5,943 2 View

Which fungicide are good for primary cells? Does it yeast contamination? How to get rid of them without killing the cells? How to get rid of spores?

Hello! Our lab is working with primary cells which we are isolating from the colorectal tissue. During the isolation, we are washing the tissue with pen-strep and then also add some pen-strep in...

07 February 2021 8,258 3 View

PEG coated Fe3O4 nanoparticles in aqueous NH3?

Hello, I synthesized PEG coated Fe3O4 nanoparticles by coprecipitation methods and I would like to ask whether they can be dispersed in aqueous NH3 since they have a PEG coating and theoretically...

06 February 2021 5,217 4 View

Moving bacteria-like organisms in my HEK293T cell culture?

Hi everyone, I have been culturing HEK293T cells that have been engineered to overexpress the mechanosensitive protein Piezo1. However, I am finding it very difficult to keep them in culture -...

02 February 2021 7,892 4 View

I want to extract engine oil from a soil sample,please how much amount of anhydrous sodium sulphate am i going to add to 10kg soil?

Engine oil extraction from contaminated soil,10kg of contaminated soil+20ml of dicholoromethane+? of anhydrous sulphate

01 February 2021 9,509 1 View