Which is the shortest and most reliable DNA extraction protocol for MTB from clinical samples?

More Gulnaz Bashir's questions See All

Which are the latest technologies a Clinical Microbiology laboratory should have for rapid diagnosis of infectious diseases in a hospital?

Need to upgrade our laboratory. To provide a timely diagnosis of various bacterial, viral, fungal and mycobacterial infections and do epidemiological typing of various nosocomial pathogens.

02 March 2018 271 4 View

I am getting a non specific band in PCR product using ITS3 and ITS4 at annealing temperatures of 56,57,58 and 59oC. Can anybody help?

08 September 2016 5,040 3 View

How do we remove amplicons from micropipettes?

My negative control is showing bands as in positive control. I repeated the experiment with new reagents and new primers. However the pipette used for adding template was used for gel loading also...

01 February 2016 5,134 4 View

Can anybody provide me a reference for speciation of filamentous fungi?

I want a reference on speciation of fungi especially zygomycetes.

11 December 2014 750 7 View

Why am I not getting bands in 1.8kb PCR for atypical mycobacteria?

I am getting a 1.8kb sized band in 1.8kb PCR encoding 16S-23S rRNA spacer region and their flanking parts with a reference H37 Rv strain but with none of the rapidly growing mycobacteria. What...

10 November 2014 9,397 5 View

Why do the bands towards the electrodes move slowly in my electrophoresis unit?

I have recently purchased a new electrophoresis unit. On electrophoresis in 1 and 2% agarose, gel bands of same size on the electrode side move slowly giving the whole thing a slanting look. The...

09 October 2014 5,610 11 View

How good is the boiling method / sonication for DNA extraction from Enterococci?

I have tried both methods without any success.

06 July 2014 4,957 4 View

Is anybody growing H.pylori on culture and doing its antibiotic susceptibility. Can you share your experience?

I am in the process of collecting biopsies for the same.

03 April 2014 9,874 31 View

Which is the current best and easy PCR based method to speciate yeasts?

I am doing PCR-RFLP to identify yeasts. I want to do away with the steps of RFLP. I know of a multiplex PCR using 3 primers for identification.

03 April 2014 2,827 2 View

Is there a problem with my RNA pellet?

Hello, I am currently having problems with RNA extraction. I am using mouse liver (C57BL6J), and I have extracted RNA from mouse liver before. Before this experiment, my final RNA pellets were...

11 August 2024 7,082 3 View

Can I base on reverse DNA sequences to perform alignment, convert to amino acids and GenBank submission?

I have reverse sequences (AB1 format), can I base on reverse DNA sequences to perform nucleotide alignment, convert nucleotides to amino acids and deposit the sequence in GenBank database?

11 August 2024 5,138 1 View

RNA Extraction Using Hot Borate Method No Longer Working?

I've been performing RNA extraction on cotton petiole tissue for a few months now using the method described in the following paper, a derivative of the typical hot borate method...

08 August 2024 9,882 2 View

I can't see the ssDNA band after performing asymmetric PCR. Is there any way to do this?

After performing symmetric PCR, PCR purification was performed. Afterwards, asymmetric PCR was performed using the PCR purification product as a template, but no ssDNA band was confirmed in the...

08 August 2024 1,668 3 View

Does crude extraction using NaOH and Tris work well with Fungi?

I'm trying to find a DNA extraction method for fungi that does not require equipment and heating. Is there anyone who can suggest an alternative option? Thank you

08 August 2024 4,733 2 View

Why after performing site directed mutagenesis ,I don't see any colony after transformation?

I want to introduce a point mutation (change in one nucleotide) into my gene of interest (DNA binding domain) I have designed primers as recommended on the Data sheet of the kit : -Both primers...

05 August 2024 9,059 3 View

Low-yield gel extraction problem?

I am having an issue with my gel image where my PCR product is not appearing very bright on the gel. When I perform gel extraction, the A260/280 purity value is very low. I used the Qiagen gel...

05 August 2024 9,798 3 View

Do you have good tips for seaweed tissue preservation in the field for post RNA extraction?

I will be with my students collecting seaweed samples in a marine farm and later we will process this tissue for RNA isolation and further sequencing. Does anyone have tips on how to collect the...

04 August 2024 501 2 View

How to isolate lymphocytes from mouse spleen?

I have tried several times to isolate lymphocytes from mouse spleen, but all attempts have been unsuccessful. I tried most available protocols. I used different dissociation media (HBSS with Ca...

04 August 2024 9,913 7 View

The question is how to use Wavenet transform?

HOW CAN I WRITE A CODE TO USE THE WAVENET TRANSFORM AS A FEATURE EXTRACTION METHOD INSTEAD OF DWT IN MATLAB?

03 August 2024 7,829 0 View

Mahmoud Mohy Elhaig

High Pure PCR Template Preparation Kit (Roche) is suitable for different clinical samples and the time you spent not more than 15 minutes depends on your experience and the quality of your equipments and the lab

Gulnaz Bashir

Thank you for your suggestion Mahmoud.

Nandagopal Murugan

Qiagen will take only 20-30 minutes for DNA extraction for PCR