How to measure folic acid/Folate content in the bacterial culture using spectrophotometer?

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Is it fine to do RNA sequencing using RNA samples precipitated by LiCl?

Generally, most of kit or protocol suggested the ethanol/isopropanol precipitation of RNA. I am curious about any side effect of using the LiCl method of precipitation especially if the goal is to...

31 December 2019 3,631 3 View

How to calculate trans-gene copy number using real time PCR ?

How much it is correlated with southern blot on the basis of accuracy.

09 October 2016 7,694 2 View

Is it possible to stain plant samples stored at -80 degree with Phalloidin fluorescent dye or only fresh tissue is required for the same??

My sample is fiber tissue and stored at -80 degree. Now I want to stain it with Phalloidin fluorescent dye. Kindly suggest if anyone has experience of such kind.

09 October 2016 9,517 2 View

How to design specific primer for micro RNA expression analysis using realtime PCR?

As microRNA are very small in size (approx 25 base long)

02 March 2014 7,498 5 View

Why Do TDS and EC Increase with Larger Wastewater Volumes, While BOD and COD Decrease?

I have carried out MFC experiments on three different volumes, 50, 500 and 1000 mL of wastewater. Results after MFC treatment shows that TDS and EC are more in larger volumes of water i.e. TDS and...

09 August 2024 9,621 0 View

Could it be a cell culture contamination?

Hello everyone! I observed in my culture (htert-RPE1 cells) an orange- red particle at the bottom of the dish. It is visible to the naked eye as a very very small red dot. Could it be a...

09 August 2024 2,824 3 View

Is there any way to quantify bacterial and fungal cells in their mixed culture?

I am working in fungal fermentation of soybean meal and there is bacterial growth in them at times. I am trying to quantify fungal cell counts and bacterial cells; but I haven't been able to do at...

07 August 2024 7,535 4 View

What precautions should be taken while handling S. aureus enterotoxin Type B in the lab?

I would like to understand potential safety concerns while handling SEB in the lab. Especially while working in animal house facility. Would like to know precautions for handling. Sigma MSDS...

07 August 2024 6,034 3 View

Separation of organic acids-HPLC?

Hello What should be done to separate and identify organic acids in HPC when their RetTime is the same?Like oxalic acid with Propanoic Acid.or acids that have a very close RetTime.

07 August 2024 8,782 3 View

How to normalize and take the significance of the MTT OD values with 3 replicates for the same cell-line?

Hi, I have a question about normalizing the MTT OD values for doing the statistical analysis. So, if we have 3 different plates and we call them 3 different replicates, so, first we would...

07 August 2024 8,106 4 View

Why activated CAR-Jurkat cell could not kill targets?

Previously when I co-coluture anti-CD19(FMC63) CAR-Jurkat with Raji with E:T=5:1, Jurkat can eliminate Raji in 24h. However, when I test another CAR construct, although I can dectect totally CD69...

06 August 2024 641 2 View

The aqueous fraction of the hydroethanolic extract is showing the presence of palmitic acid. What is the mechanism responsible ?

Palmitic acid presence in aqueous fraction

05 August 2024 8,624 4 View

How can I inoculate a lyophilized anaerobic bacteria into the culture medium without an anaerobic chamber?

There are anaerobic gas pak jars and environment providers in the laboratory that provide anaerobic environmental conditions for the growth of anaerobic bacteria. However, there is no anaerobic...

05 August 2024 4,945 3 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

Prakash S Bisen

Here it is.

Rahma Abubakr

Hello Did you get any answer, or what did you do? as far as i know natural folates best way is the folate bioassay. did you find any other method?

Dhananjay K. Pandey

Ya you are right Rahma Abubakr.... You may also check following link

http://pubs.rsc.org/en/Content/ArticleLanding/2014/AY/c3ay41874j#!divAbstract.