Why freeze proteins quickly but cells slowly?

A graduate student recently asked me this question and I stumbling to give a good answer. We freeze our purified proteins quickly (liquid nitrogen or dry ice/EtOH) to prevent ice crystals from...

11 September 2018 5,439 3 View

Can I detect soluble proteins via flow cytometry?

19 March 2017 3,037 6 View

Is there a way to sterilize poly-L-lysine?

I have some poly L lysine which isn't sterile (we use it to coat slides por microscopy) and I would like to use some for cell culture, so my cells can attach to the culture bottle. Is there a way...

13 September 2016 2,146 3 View

Does anyone know a human cell-line which expresses PD-L1 and MHC class II?

I'm looking for a human cell-line which expresses PD-L1 (could also be inducable) and MHC-II, I already checked ATCC and other sites, but couldn't find anything... I'd be glad about any...

28 September 2015 4,875 4 View

What's the correct recipe for Fekete's solution?

The current protocols of immunology says this: Fekete's solution For 1 liter: 580 ml 95% ethanol 200 ml H2O 80 ml 37% formaldehyde solution 40 ml glacial acetic acid...

01 April 2014 5,799 6 View

English as a Foreign Language spelling acquisition

This is a question to fellow researchers living in countries where English is studied as an additional or foreign language (EFL). Theories proposed by Ehri and Rosental (2007) as well as Perfetti...

01 January 1970 3,827 4 View

What are the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 2 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Which bacteria are suitable for quorum sensing screening?

I want to find a quorum sensing inhibitor from plant extracts. Klebsiella pneumoniae, Moraxella catarrhalis, Staphylococcus aureus, and Streptococcus pneumoniae. I looked for these strains...

01 March 2021 7,675 3 View

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

How to remove fatty material from plant extract?

The resultant solid was partitioned three times with 250 ml of petroleum ether (40-60/c) to remove any fatty material and evaporated to dryness.

28 February 2021 9,464 2 View

Can water be extracted from Olivine?

I have always been interested in geology and wondered about how unique structures of materials behave in different circumstances. I stumbled upon Olivine, the magnesium iron silicate, and heard...

28 February 2021 7,330 4 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

Good morning research fellows, Has anyone worked with senna alata plant extract on any kind of fish?

Literatures on the piscicidal effect of sennaa alata is scanty. if you have any related litrature either in the bark, leaves or roots used as treatment to any aquatic organism please kindly help...

28 February 2021 9,138 2 View

How to arrange coordinates and extract climate dataset out of MPI-ESM-MR netcdf files?

Have a nice day everyone, I'm stuck in extracting datasets out of MPI-ESM-MR netcdf files because the latitude ranges from -3*10^6 to 3*10^6 and longitude ranges -5,9*10^6 to 5,9*10^6. Plus, the...

28 February 2021 912 3 View

What is the most suitable resuspension buffer for TCA/acetone precipitated protein?

I need to extract protein from fermented carbon sources for Bradford assay. Most researchers experiencing insolubility of pellet in resuspension buffer. Please assist me to select most suitable...

26 February 2021 7,129 3 View