What is the best technique to identify native bacteria groups present in soil?

I am lay in this subject. Is DNA sequencing the best way to identify the different types of soil bacteria present in soil samples? Ideally, I'd like to find a technique that allows me to identify...

29 September 2020 4,609 9 View

Do you have any suggestion about constrained estimation of mixed models using lme4 package of R?

I would like to use the lmer function of the lme4 package to estimate the random part of the model given the coefficients of the fixed part (which have been estimated in a previous stage using...

24 February 2020 1,731 5 View

ERT Optimisation protocol sequence software-code for 3D unconventional electrode arrays?

Anyone know about any freely available software or code that can optimise protocol sequences for 3D unconventional electrodes setups, including borehole electrodes? The closest research I found...

15 November 2019 7,802 3 View

How can I calculate the concentration of 30nM miRNA from a 5nMol stock?

I have a transfection experiment to be done. The stock miRNA is 5nMol. The manufacturer recommends adding 75uL of sterile water, giving me a concentration of 66.67 uM. How can I have a final...

05 May 2019 4,141 7 View

Do we have cell culture contamination?

We are experienced lately some problems with primary cells. We could see (even in 10x magnification) tiny bright particles around the addhered cells. There is no macroscopic sign of...

14 December 2016 7,464 11 View

Could anyone help me with PCR to Mycoplasma detection?

I'm tryint to standardize a PCR to mycoplasma detection of dna from cell culture. I'm testing samples positive for mycoplasma and negative as controls. I found a weak band unspecific slightly...

29 June 2016 7,818 3 View

Low caspase activity in heavy metal lethal concentration 50 (LC50). What does that mean?

02 June 2016 1,480 3 View

Can anyone help me to calculate the NP ratio considering that I have mass per phosphate of 13,300 g/mol and mass per amino of 43 gm/mol?

Can anyone help me to calculate the NP ratio considering that I have mass per phosphate of 13,300 g/mol and mass per amino of 43 gm/mol?

22 May 2016 9,403 1 View

How do I read the results of an ANOVA (2 independent factors) that instead of F reason, I got a Z? What is this Z?

I ran a 2 independent factors ANOVA in SPSS and got a Z score instead of F. Is that related to different sample sizes in different conditions? Do I need to even the sizes of the samples before...

08 March 2016 3,813 7 View

Could someone advise me about the best proportion of Ficoll-Paque Premium (1.077g) and bone marrow for isolation of mononuclear cells?

Hi, everyone. I want to isolate mononuclear cells from bone marrow using gradient centrifugation with Ficoll-Paque Premium 1.077g. However, GE's protocol suggests almost 1:1 of ficoll and bone...

21 October 2015 1,694 4 View

Is it possible for two human neuronal cell lines to have different gene sequence for the same protein?

I am looking at the ATP1A2 (Sodium/Potassium ATPase alpha subunit 2) in two human neuronal cell lines. Expression levels of this protein seems to be almost equal when detected by one antibody....

01 March 2021 3,607 3 View

Genome-wide gene identification protocol ?

Is there any book chapter/book, webpage or research article available to understand genome-wide gene identification?

28 February 2021 8,095 1 View

MiRNA qpcr problem?

Dear All, mirna primer showing some problem in the melting curve? any idea why? As attached is the melting curve. The forward sequence is obtained from miRBase and reverse primer is universal.

28 February 2021 5,008 4 View

Any specific pipeline or parameter to analyse total transcriptomics study of brain tissue samples?

I have two groups of brain samples, control and treated for example. It was total RNA nova seq sequencing. I tried all the available pipeline like: star+rsem+deseq2, Hista+stringtie+cuffdiff,...

27 February 2021 356 6 View

Why is the efficiency of viral mRNA electroporation in PBMC low?

Hello, I have been struggling with the electroporation of PBMC with HIV-I mRNA. Although the quality of the RNA generated is good, and the handling of the cells in meticulous, the frequency of...

27 February 2021 9,233 3 View

Can MicroRNA cross the blood brain barrier?

In diseased conditions, many genes and gene products are visible in the bloodstream. So my question is whether we can find traces of microRNA which is involved in disease and disorder in blood serum?

24 February 2021 7,064 3 View

RNA-seq DEGs downstream analysis and reporting in literature?

I used EdgeR to get the list of DEGs (differentially expressed genes) from my liver RNA-seq experiment. I have done the gene overrepresentation and GSEA based pathway analysis. I am currently...

23 February 2021 8,969 1 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Could you please suggests a tutorial or paper or any other materials to learn multiple gene expression in TCGA and GTEx databases?

I would like to analyze multiple gene expressions in normal and cancer tissue by using the data in the TCGA and GTEx databases. Please suggest a tutorial or paper showing step by step analysis of...

23 February 2021 9,007 3 View

Universal bacterial primers targeting a mRNA?

Hi, I'm looking for universal primers targeting a bacterial mRNA to quatify bacterial load by qPCR in a complexe mixture (eukaryote and prokaryote RNA). Ribosomal RNA being depleted, I absolutly...

22 February 2021 9,969 3 View