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What is Neural Survival Factor-1 (NSF-1)? What is the proper way to use NSF-1?

Lonza’s Neural Survival Factor-1 (NSF-1) is a complex mixture of various compounds, chemicals, cytokines, and growth factors. NSF-1 comes prepared as a 50x solution. As such, it is recommended that the one 4 ml vial of NSF-1 is used to supplement 200...

What are the advantages of the Lonza Bacterial Endotoxin Test (BET), LAL or PyroGene™ Recombinant Factor (rFC), endotoxin detection assays over the rabbit test?

Lonza LAL and PyroGene™ rFC Endotoxin detection assays are faster, have greater sensitivity, show less variability,, are less expensive, and are an alternative to animal model testing. These assays allow higher throughput and can also be automated on...

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....

How should I properly heat my Lonza QCL-1000™ Endpoint LAL Bacterial Endotoxin Test (BET) Assay?

Incubation is another area where assay performance can be affected. We recommend the use of a dry bath and heat block combination that is capable of maintaining 37 ±1 °C. The temperature should be monitored with a calibrated thermometer and checked...

How many donors are pooled to create the pooled human cells?

Lonza is offering the following primary cells from single donors and from pooled donors:HUVEC (human umbilical vein endothelial cells)NHEK-neo (human epidermal keratinocytes)HMVEC-dNeo (human microvascular endothelial cells, dermal, neonatal)When...

What is the difference between Lonza’s various renal cell types?

The primary differences between each of Lonza’s various renal cell types are the isolation location and the markers for which each cell types tests positive.Human Renal Epithelial Cells (HRE; Catalog no. CC-2556): Lonza’s Human Renal Epithelial (HRE)...

When would be the optimal time to perform experiments post osteogenic differentiation for human mesenchymal stem cells?

Once the cells have differentiated and started laying down bone matrix, we recommend assaying the cells immediately. If cells begin to delaminate (peel of the culture plate in layers), this would indicate that the cells are embedded in the calcium...

How should I handle the reconstituted Lonza LAL PYROGENT™ Gel Clot Bacterial Endotoxin Testing (BET) Reagent?

Rehydrated LAL reagent may be stored for as long as 24 hours, but it must be kept at 2-8 °C. Do not pre-incubate lysate in the LAL test tubes before adding samples to them. This is not necessary and may cause sensitivity loss in the LAL reagent. If...

Where are Lonza’s HRE Human Renal Epithelial cells CC-2556 isolated from?

Lonza’s Human Renal Epithelial (HRE) cells are an expansion of HNK (human neonatal kidney) cells. The kidneys are homogenized and the mixed population of cells are cultured in Lonza REGM™ Renal Epithelial Cell Growth Medium for one passage prior to...

How do I handle my Lonza Control Standard Endotoxin (CSE) for Bacterial Endotoxin Testing (BET)?

Lyophilized E. coli endotoxin should be stored at 2-8°C. Endotoxin solutions are generally very stable upon storage except at more dilute concentrations. Rehydrated E. coli endotoxin should be stored refrigerated only (at 2-8°C and not frozen)....

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