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Are rat and mouse hepatocytes transfected by Nucleofection® still functional?

Yes, transfected mouse hepatocytes show albumin synthesis rates comparable to those of untransfected cells. Moreover the morphology and polarization of rat hepatocytes is not affected by Nucleofection®.

Can calcium influx issues affect viability or differentiation in Stem Cells after Nucleofection®?

When cells are transfected by Nucleofection®, transient pores are generated in the cell membrane. Generally, these pores disappear within 15 minutes of transfection, but if cells are plated immediately after Nucleofection® in medias that contain...

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...

What does the message "weak" mean on the display of the Nucleofector® IIN, IIS or 2b after Nucleofection®?

This message means that the system cut off the pulse before it was completed (usually this is because the conductivity of the solution is at the low end of the normal range). The pulse was applied; it is just going to be a little weaker than...

Which luminometer is suited for performing the MycoAlert® Assay?

For performing the MycoAlert® Assay in theory every luminometer is suitable as long as a specific sensitivity is given. Please find attached our list with luminometers we know to be suited to run the MycoAlert® and MycoAlert® Plus Mycoplasma...

Where can I find the meaning of the 4D-Nucleofector® System Error Codes?

In the back of the respective manuals, there is a chart giving a brief description of the error codes. If more information is needed or an error code is recurrent, it is best to contact Scientific Support for advice to determine if there is a...

Are there positive controls for the MycoAlert® Assay?

The MycoAlert® Assay Control Set (LT07-518) is available separately and includes a lyophilized positive control (1 ml) and assay buffer (2 ml) for reconstitution. The assay buffer also serves as a negative control. The positive and negative controls...

Does the MycoAlert® Assay recognize the whole spectrum of mycoplasma?

The mycoplasma specific metabolism detected by the MycoAlert® Assay is present in all members of the mollicute family (Mycoplasma, Acholeplasma, Entomoplasma and Spiroplasma) except Ureaplasma (which are no usual suspects in cell culture). 95% of all...

According to which standard is the Nucleofector® System certified?

The 4D-Nucleofector® Unit was tested by TÜV Rheinland Product Safety GmbH and found to be in compliance with the following standards:• IEC 61010-1The 4D-Nucleofector® Unit was tested by TÜV Rheinland of North America Inc. and found to be in...

Generation of a stable cell line: A positive control plasmid works, but I cannot obtain stable clones with my construct of interest. What could be the reason?

One reason could be that your gene product is toxic to the cells. We recommend testing the construct for expression of the gene of interest by transient Nucleofection® of your cells. If the proportion of expressing cells drops between 4 and 48 hours...

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