How should I go about evaluating cytoplasmic and nuclear Arginase-1 activity?

Hello! I've stained some bright field Arginase-1 Hematoxylin slides, but I'm having a hard time finding any computed histology predicates for evaluating the intensity of the cytoplasm verses the...

03 February 2021 3,039 1 View

Does anyone know why I would have unexplained emission overlap for flow cytometry?

Hello, I am new to flow cytometry, and was just using a sample cell population to train with the technician. The cells were PAC-1 cells split into four groups. Unstained, transiently transfected...

28 January 2021 969 2 View

Does anyone know of a library for R that includes phi?

I'm looking to produce some phi correlations and I'd rather not do it manually, but I can't find a library for R that includes phi.

18 January 2021 2,808 9 View

In SEM, how to interpret standardised regression weights and their significance?

I have a SEM model that I'm having difficulty interpreting. It has one direct effect with a Beta/standardised regression weight that appears to be high (0.80) and significant (p

31 December 2020 7,604 6 View

Does anyone know how to add custom text to a violin plot in r, ggpubr made using the ggviolin line?

I've produced a violin plot for a point-biserial correlation. Main title is there, x and y are labelled, but I want to add a custom text box with the correlation coefficient and significance...

26 December 2020 4,480 4 View

How do I interpret these correlations and p-values?

I've just run a series of point biserial correlation tests in R between whether or not characters were assigned national identities, and attributions given to their behaviours - results shown in...

17 December 2020 9,825 4 View

Is it possible to fuse Deep Learning Net and Clustering Algotrithm?

What I did (unpublished yet) is extract several (e.g. 16) mask features within Mask R-CNN from multiple images, construct a distance metric to compare them to predict the image class. Each set of...

13 December 2020 9,504 2 View

Are there models trained+evaluated on multiple datasets?

Generalization of COVID-19 models is a very serious challenge. I'm trying to find a model (ct scans or x-rays) that was trained and evaluated on multiple datasets. It would be particular...

03 December 2020 8,863 4 View

Are there models trained on both x-ray and ct scans for COVID-19 prediction?

I've only come across models that were trained and evaluated on one of these data. I don't see why it would be a problem to do both, as there are many similar features.

03 December 2020 8,310 3 View

When examining a series with different numbers of episodes per series, should I treat it as single sample, use harmonic mean or some other approach?

I'm currently examining how the behaviours of fictional characters are explained to child audiences through attribution theory as part of a study into the psychology of how children learn about...

27 November 2020 8,229 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

How to replicate the well conditions of a crystal hit with 20%(w/v) isopropanol?

I had a crystal hit in a well with 0.1M HEPEs pH 7.5, 10%(w/v) PEG 4000, and 20%(w/v) isopropanol. Why is isopropanol in w/v here if it's just solvent? How do I recreate this well condition?

25 February 2021 9,761 1 View

Genescan gives 3 peaks instead of one?

Hi all, I am doing a genescan analysis for a deleted exon in the patient sample. The amplified region is 215 bp. In the patient sample because of homozygous deletion, no peak is observed while in...

23 February 2021 5,645 1 View

How to reduce static electricity of powder after lyophilization?

I am working on synthesizing and then purifying peptides using the SPPS system. After purification of the peptide, the peptide powder is obtained using a freeze dryer. When measuring the powder,...

22 February 2021 10,099 5 View

What is the minimum number of exosomes/ml to have a good yield of total RNA for Illumina sequencing?

I am using IZON qEV2 columns to isolate exosomes from 100 ml of cancer cell conditioned medium. in NTA analysis I usually see concentration of 2x10^9 particles/ml. But when I proceed with this...

20 February 2021 6,879 3 View

Does anyone have a working Guanidine Hydrochloride purification protocol for synthesized ssRNA?

I am trying to in vitro transcribe some fluorescein labeled ssRNA. And I want to purify the ssRNA from the free NTPs and the enzymes (RNA polymerase and DNase I). Due to the characteristic of the...

18 February 2021 4,392 4 View

Purification of proteins from baculovirus-infected insect cells?

18 February 2021 6,665 6 View

Agarose gel purification pre MinION sequencing?

Dear all, we performed an agarose gel purification with MinElute kit (QIAGEN) to extract bands between 3500 bp and 6000 bp for further sequencing with MinION. After the purification process,...

16 February 2021 5,178 1 View

Why samples do not run in resolving gel?

Hello everybody, I have a problem with SDS-PAGE and I do not know why my samples stop at the top of the resolving gel and they do not run through it. The percentage of gel is 15% and the size of...

14 February 2021 9,116 6 View

Low DNA yields with midiprep and maxiprep plasmid extraction kits but excellent results with miniprep kits. What can be a possible reason?

I need to extract large amounts of plasmid DNA for transfection into mammalian cell lines with as little as possible enterotoxins and I usually use the Qiagen Endofree plasmid maxi kit for the...

09 February 2021 3,779 6 View