How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

What thickness need for ITO to use as conductive layer?

I want to do RF sputtering of ITO on glass substrate using magnetron sputtering. what thickness do i need to make it good conductive layer to use it for PSC. Moreover, whats about thickness of...

01 March 2021 395 3 View

Are protein samples in SDS compatible with ELISA?

I have used an AllPrep DNA/RNA/Protein Mini Kit QIAGEN kit to extract RNA and protein from my samples. At the end of the protein purification, I resuspend my protein in 5% SDS. Will these samples...

28 February 2021 7,370 3 View

Special issue on PLS-SEM in Mathematics. Are you interested?

21 February 2021 5,601 3 View

How to calculate the TCID50 when the highest CPE is 50% or less?

I am doing TCID50 to measure progeny virus and some treatments protected the cells in a way that the highest CPE observed is 50% or less. How should I do the titre calculation in that case? Thank you!

16 February 2021 8,768 1 View

Are there any differences between setting automatic or manual number of measurements in DLS?

When doing measurements in DLS (either size or zeta potential), I have the option to input an automatic number of measurements or to set it manually. My question is: is there a drawback in...

08 February 2021 9,423 6 View

Which drug is better to modify blood pressure in awake monkey, if I provide it in the food or drink reward?

I need to modify the blood pressure in a monkey while is awake in the recording chamber, and I am planing on provide a drug for that in the food or water used for reward... any advise? Thank you

08 February 2021 9,900 1 View

Why stop the reaction in ice for the fluorescent probe FDA (fluorescein diacetate)?

Hi, In literature I noticed that who stains haemocytes with FDA for 30 min then stop the reaction in ice while this does not apply for 15 min incubation time (or maybe authors did not write this...

08 February 2021 3,366 3 View

How to make Fast Green FCF from powder?

Hi everyone We need Fast Green to electroporate plasmid into mice embryos, therefore we simply need it to see some color in the liquid we are electroporating so that electroporation is more...

07 February 2021 1,671 2 View

Why do high doses of humic substances inhibit the growth of corn roots? Is there a toxicity effect?

Length, volume, surface area and dry mass of corn roots treated with humic substances increased up to 13 liters per hectare and decreased with higher doses.

02 February 2021 2,190 4 View

How can you bring two structures together to create an adhesive bond in LAMMPS?

I have created an Ice 1h crystalline structure and an Aluminium substrate structure and equilibrated both at 250K. Now I need to bring them together in a way that an adhesive bond is created....

01 March 2021 3,325 2 View

Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS?

I need to model masonry and reinforced concrete minarets for my MSc thesis. Which one is easier and better at modeling slender masonry structures? ANSYS or ABAQUS? (Or any other program for just...

01 March 2021 736 3 View

Alginate and silk fibroin hydrogels toxic to cells?

Hello, I asm currently working with alginate and silk fibroin hydrogels. I prepared a blend of alginate and aqueous silk fibroin (straight from dialysis) and resorted to ionic crosslinking to...

23 February 2021 8,249 2 View

What to do with absence of fluorescence label in Fucci2a mouse-derived fibroblast culture?

Dear all, I have harvested fibroblast cells from R26p-Fucci2 mouse embryos (mouse line as described in this paper: https://dev.biologists.org/content/140/1/237) and cultured them on plastic,...

17 February 2021 3,368 2 View

Which detection method is better for an ELISA-based assay: colorimetric or fluorometric?

Hello, I am planning to perform an ELISA-based assay to quantify the percentage of genomic methylation (5-methylcytosine) in human embryonic stem cells. I've been searching for some kits and I...

16 February 2021 8,389 3 View

Is my GFAP staining in right position?

I was differentiate hESC to astrocyte. In the second week of differentiation, I stained my cell with s100beta and GFAP. I expected that the staining site of GFAP would come from the cytoplasm,...

15 February 2021 8,982 1 View

How to raise temperature in small increments during equilibration in LAMMPS?

All, I am trying to equilibrate an Ice 1h crystalline structure to 250K in LAMMPS. When I tried to do this at 250K directly, the structure lost it's crystalline shape and became disordered post...

14 February 2021 5,747 2 View

How long can agarose embedded tissues be kept?

I am embedding PFA fixed tissues in low melting point agarose prior to sectioning and I am wondering how long can these can be kept whilst maintaining tissue integrity and fluorescent signal?...

14 February 2021 6,688 3 View

Has anyone tried eBioscience Foxp3 / Transcription Factor Staining Buffer Set with TdTomato+ cells?

Hi all, I stained tdTomato+ cells (PBMCs and Jurkats) with eBioscience Foxp3 / Transcription Factor Staining Buffer Set for the foxp3 and I completely lost the signal of tdTomato. I tried to fix...

10 February 2021 5,863 2 View

Which is the best way to calculate doubling time for human embryonic stem cells?

Hi! I would like to perform a doubling time assay in several newly derived human embryonic stem cell lines. Since hESC must be passaged as cell clumps, I cannot know the exact number of cells I am...

10 February 2021 2,895 4 View