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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...

What selection markers can I use for the generation of stable cell lines?

The most commonly used marker is the neomycin phosphotransferase (neo) gene that confers resistance to G418 to eukaryotic cells. Other markers are Puromycin, Hygromycin, Zeocin, or the HPRT gene that can be used in HPRT-deficient cells.

At which time point after Nucleofection® should I start selection of stable integration?

Antibiotics for selection should be added 24-48 h after Nucleofection®.


Are there any contaminating glial cells in your Clonetics rat or mouse embryonic neuronal cells?

There will be a small amount of glial cells in the culture, these are not considered a contaminating cell type. The glial cells are necessary to help the neurons form their axons and dendrites, synchronize the activity of the axons, and remove...

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...

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 your Clonetics Rat and Mouse Astrocytes proliferate?

Yes. The cells do expand in culture.

How often should I change the medium during selection of stable clones after Nucleofection®?

The culture medium should be changed every 2-3 days during the selection process.This eliminates potentially toxic substances produced by dying cells and secondly, it keeps the concentration of the antibiotic at a constant level.
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