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How can cells be cured of mycoplasma contamination?

Where contamination has occurred, and the sample absolutely cannot be discarded, the MycoZap™ Mycoplasma Elimination Reagent has been optimized to eliminate mycoplasma with minimal toxic effects on the cells. The MycoZap™ Reagent eliminates...

Is it typical for the fluorescence observed from my tagged protein to appear less than the empty fluorescent vector?

Yes, this is a routine observation.Fluorescent fusion proteins can appear less bright than the fluorescent protein itself. This may be due to differences in protein folding of the fused protein.

Do you have any instructions available for using a hemocytometer for cell counting?

Yes. Our technical guideline "Cell Counting and Determination of Viability via Hemocytometer" can be found as associated pdf file in the link below.

In my Nucleofection® Experiment, how critical is the time point for analysis post transfection?

It is very critical. Waiting too long for analysis post transfection can lead to loss of peak expression. The optimal time for analysis is related to two factors: stability of protein being expressed and transfection method. For a short-lived protein...

Does the GFP sequence in the pmaxGFP control plasmid has a stop codon?

Yes. The coding sequence ends with a stop codon (TGA/UGA).

When I transfected my cells, error 8 appeared on the display of the Nucleofector® IIN, IIS or 2b. What is the reason?

Error 8 occurs when there has been an arc within the cuvette during application of the electrical program. The pulse application started but was interrupted because too much current was detected. Efficiency may be lower than expected due to the...

Should any type of extracellular matrix be used when growing undifferentiated hMSC's (human Mesenchymal Stem Cells)?

That will depend on the type of medium used. If you are using our MSCGM™ BulletKit™ PT-3001, we do not recommend using a matrix with the cells as it might induce differentiation and make the cells difficult to detach from the culture vessel. If you...

Do we sell the Nucleofector® Solution (or any other component of the Nucleofector® Kit) separately?

We don't sell the individual components of the kits separately because our product line is a kit concept line to ensure the use of certified products with quality controlled lot numbers that guarantee optimal results.

What is the shelf-life for all the media associated with Human mesenchymal stem cells?

The shelf-life of the MSCGM™ Mesenchymal Stem Cell Growth Medium BulletKit™ (PT-3001) once the SingleQuots Kit is added is 30 days. For the differentiation kits:hMSC differentiation BulletKit™ – osteogenic (PT-3002)hMSC differentiation...

What is the difference between the different cell sources (bone marrow, cord blood, or fetal liver) for CD34+ cells?

Bone Marrow: provides a hematopoietic microenvironment and the highest number of different donors.Cord Blood: more naive cells useful in transplant and stem cell research.Fetal Liver: best for developmental studies and they are highly proliferative....
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