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I transfected neurons using the 4D-Nucleofector® Y-Unit. After Nucleofection®, there were precipitates in my culture. What can I do?

Most likely there was too much Nucleofector® Solution left before medium addition. Please try to aspirate solution after Nucleofection® as complete as possible without disturbing cell adherence, but add medium quickly to avoid cells...
Missing: stable lines

What media can the CD14+ Monocytes be cultured in to maintain the monocyte phenotype?

CD14+ Monocytes can be cultured in IMDM + 10% FBS to help maintain the monocyte phenotype. The cells will slowly become adherent but it can take a week to get good adherence. M-CSF (10 ng/ml) will induce a little proliferation and increase adherence...
Missing: stable lines

Why does Lonza recommend two different concentrations of the B-Glycerophosphate in the Normal Human Osteoblasts (NHOst) differentiation protocol?

Lonza R&D has found some NHOst cell strains to be more sensitive to B-Glycerophosphate than others. While it is necessary to differentiate, at too high of concentrations the cells will lift off dish, curl up and die. As such, Lonza recommends...
Missing: stable lines

When is the ideal time to study Lonza’s Human Knee Articular Chondrocytes (NHAC-kn) after re-differentiation?

...will result in the cells losing their differentiated phenotype until the culture is almost 100% de-differentiated and no longer express collagen. For optimal re-differentiation, cells should be expanded as few times as necessary prior to re-differentiation....
Missing: stable lines

Why must Lonza’s Normal Human Articular Chondrocytes (NHAC-kn) be re-differentiated to express collagen?

Lonza’s Normal Human Articular Chondrocytes (NHAC-kn) are differentiated cells which express collagen when they are initially isolated, however, they lose their differentiated phenotype after serial expansion in monolayer culture so that by the 2nd...
Missing: stable lines

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...
Missing: stable lines

Can I use SDS as a detergent for a positive control if I do cytotoxicity assay with ToxiLight™?

...of the enzyme adenylate kinase released from cells undergoing necrosis, this will obviously be denatured by the SDS. ToxiLight™ is a bioluminescent based assay which uses the firefly enzyme luciferase, the luciferase will also be denatured by the SDS. You...
Missing: stable lines

What is the amount of siRNA needed per Nucleofection® Reaction?

...For Nucleofection®, the optimal siRNA concentration can range from lower than 2 nM up to 2 µM, depending on multiple factors such as the cell type, and the half-life of the mRNA and/or protein of the gene target. To determine the optimal concentration for your cell...
Missing: stable lines

What is the difference between the EGM™ and EGM™-2 growth media? What is the difference between the EGM™-MV and EGM™-2MV growth media?

...and epidermal growth factor (hEGF).Cells tend to proliferate better in the EGM™-2 and EGM™-2MV growth media versions, however some customers have indicated that the original EGM™ and EGM™MV growth media works better for VEGF, FGF and angiogenesis research...
Missing: stable lines

What factors interfere with the ViaLight™ Plus Assay?

...in cell culture).  Fetal Calf Serum also quenches but levels of FCS below 10% have no significant effect on assay sensitivity.  Concentrations above 10% may reduce the sensitivity of the assay.  When investigating dose-response relationships...
Missing: stable lines
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