How can I know which family/species of virus is making the difference between my samples?

I have several metagenomic samples, from which I got the viromes through a bioinformatics pipeline. I made a PCoA of those samples, and some of the samples cluster together. I would like to know...

08 July 2020 8,434 2 View

If female mice are put together on the same cage, are all of them on the same estrous cycle stage?

I work with female mice and I have this doubt. If they are all put together on the same cage, are all of them on the same estrous cycle stage? If so, is there any literature that supports...

01 April 2020 6,266 10 View

How to blast a paired end fastq file?

Hello everyone, I have a paired end fastq file and I know that BLAST+ in command line, accepts fasta format. But I don't know how does it work for a paired end fastq file (I mean in two different...

22 May 2019 2,482 2 View

260/230 ratio of my RNA samples are very low. Is there any method to try purify the sample and synthesize cDNA!?

I extracted RNA from spinal cord tissue using Trizol and following invitrogen's protocol for RNA extraction for PCR. I had good 260/280 ratios (around 1,8-1,9), but very low 260/230 ratios...

16 April 2019 768 2 View

How to perform KASP genotyping of zebrafish larvae at 72hpf?

Dear all, I need to genotype some zebrafish larvae at 3-4dpf. I currently tried to perform it as I do it for the adults, but it did not work. Basically: 1. Fin clip and add the fin to a 96 well...

20 January 2019 989 3 View

IHC in peripheral blood smear?

Hi everyone. We want to do an IHC in peripheral blood smear but it's our first time, and we have some doubts. How do we have to fix the samples? Which is the best fixation agent, acetone, methanol...

15 October 2018 9,338 5 View

Non-transcriptomic pathways that can increase lipid accumulation?

I am currently doing a project investigating the lipid accumulation potential of a chemical using an in vitro model. Upon observing significant lipid droplet accumulation at various...

18 March 2018 4,812 4 View

Are you studying affects toward science, technology and/or mathematics in university and preuniversity students in your country?

We may share instrument and compare data with ours.

02 January 2018 1,064 12 View

QPCR stopped working for well-set up amplicons

Hi all, I ask for your help to solve a difficult problem I'm experiencing with some samples. I'm performing ChIP-qPCR of a transcription factor. We have done this experiment many times and it has...

29 June 2017 6,286 3 View

Is there a protocol to show cytoskeleton disruption in cells after being treated with cancer drugs?

22 January 2017 8,949 3 View

Have someone successfully used the ER alpha (Santa Cruz sc-8002) antibody in immunostaining ?

Santa Cruz now recommends this new antibody (F-10) but I can't find a publication using this reference. I'm working on human et non human primate hypothalamus and so far, it doesn't work. Is...

02 March 2021 10,003 2 View

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

What is the ideal efficiency for a qPCR?

hello everyone, I need to do standard curves for my qPCR, what is the ideal efficiency range? I tried a primer (Mglu2 receptor) that gave an efficiency of 90.2%. Is it accepted?

28 February 2021 1,254 3 View

In frequency domain alpha band(8-16hz), beta band(16-32hz), gamma band(32-64hz), sub-band(64-128hz) are same as LL,LH,HL,HH in wavelet decomposition?

I am working on single trial motor imagery data i.e. EEG data. I am following a paper which has a dataset from BCI challenge IV (dataset 2b). After removing noise and extracting all the data from...

23 February 2021 5,503 1 View

MVN, how to conciliate contradictory results from Multivariate normality and Multivariate outliers test?

Dear colleagues, I'm working with Path analyses in lavaan and MVN packages. There are some results that for me are confusing and features from the MVN that I do not know how to set. My dataset is...

18 February 2021 190 3 View

Is it possible to obtain a negative cronbach alpha?

Good evening everyone. If a questionnaire has 4 factors measuring different constructs as for example CAMI questionnaire measuring attitudes toward the mentally ill that has four factors:...

18 February 2021 3,223 3 View

Any information about dinitrosalisylic acid reagent end point color stability ?

I work on estimation of alpha amylase activity using dinitrosalisylic acid reagent If i put the reagent to stope the enzymatic reaction and allow the reagent to react with the produced reducing...

17 February 2021 7,402 4 View

Can we have constructs of Cronbach alpha value with more than 0.9 in social science research? What is recommended in this problem?

My study consists of a conceptual framework with seven constructs measured in seven point Likert scale. According to pilot study, only three constructs have Cronbach alpha value more than 0.9...

12 February 2021 9,368 2 View

Can Immunogenic BNT162b vaccines protect HUMANS from SARS-CoV-2?

"A safe and effective vaccine against COVID-19 is urgently needed in quantities sufficient to immunise large populations. We report the preclinical development of two BNT162b vaccine candidates,...

11 February 2021 6,628 9 View

Which and How to use teaching strategies and procedures to effectively integrate the four skills while teaching English Language Online?

As an inexperienced teacher in the field of online teaching, I have the fear of unconsciously ignoring one of the skills while focusing on not ignoring the other! Therefore, I wish to make use of...

09 February 2021 5,101 4 View