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Did you know that by combining ToxiLight Non-Destructive Cytotoxicity BioAssay with ViaLight Plus Cell Proliferation and Cytotoxicity BioAssay you can assess proliferation, cytotoxicity and even cytostasis?

Proliferation shows increased Vialight™ Plus RLUs (Relative Light Units) but NO increase in ToxiLight™ RLUs*Cytotoxicity shows decreased Vialight™ Plus RLUs and increased ToxiLight™ RLUs*Cytostasis (where the cells are alive but unable to...

Is it necessary to remove antibiotics for some time from the cell culture medium before taking sample to test medium for presence of mycoplasma using the MycoAlert® Mycoplasma Detection Kit?

The MycoAlert® Mycoplasma Detection Assay was designed to “fit” in with normal tissue culturing practices. It was developed in fully supplemented culture media containing antibiotics and DOES NOT require a period of culture without antibiotics...

Is it possible to store supernatant samples for testing with the ToxiLight BioAssay at a later date? 

Yes, store supernatant at either -20 or -80 for up to three months.

Do you have a protocol for stimulation of mouse B cells?

Yes, if you want to transfect mouse B cells, we recommend to stimulate the cells before. The information is also available in the mouse B cell Nucleofection Protocol. Our R&D has used following combination : RPMI1640 supplemented with...

Can mycoplasma grow outside of a cell?

This is an area that is up for debate. There is evidence that mycoplasma can survive in the absence of cells, and some may proliferate, but as a rule they are much happier if cells are present.

How to determine if a compound interferes with Toxilight Non-Distructive Cytotoxicity BioAssay

#1-2 is to determine if the media contains Adenylate Kinase (AK), the enzyme detected in Toxilight™ Assay1. Run compound in buffer with ToxiLight™ Reagents.There should be no light output.2. Run compound/Media with ToxiLight™ Reagents.If...

Which cell numbers should I use when running the ToxiLight Non-Destructive Cytotoxicity BioAssay

Toxilight works much better at low cell numbers, for adherent cell lines < 10,000 in one well of a 96well plate and < 50,000 for suspension.We would normally seed 10,000 cells/well when using adherent cells to allow enough room in the well for...

Can I use the ViaLight Plus Assay also, if my cells are cultured in 24well plates, 6well plates or 12 well plates?

To do the VialIght™ Plus Assay on larger volume tissue culture ( eg 6 well , 24 well) add the cell lysis reagent equal to half the volume in the plate ( ie 100 µl culture use 50 µl cell lysis). Wait 10 minutes for the lysis . Then follow the protocol...

Do you know if treating cells with 10mM MgCl2 would interfere with the ToxiLight Non-Destructive Cytotoxicity BioAssay?

Magnesium (Mg) is a cofactor for both luciferase and Adenylate Kinase (AK) and will speed up their reactions, but this amount of MgCl2 wouldn't make a significant difference.

What is the typical cell distribution for peripheral blood mononuclear cells (PBMC) catalog number CC-2702? 

We don't characterize each lot of these cells. Therefore, we don't make any guarantee regarding cell type distribution.Typically, you would expect to see approximately 60-80% T Cells, 10-20% monocytes, and the remaining cells would be...
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