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Cell Aggregation Assays – NucleoCounter® NC-200™

Precise Viability and cell count of highly aggregated cells

The NucleoCounter® NC-200™ counts nucleated cells, by fluorescent staining of the DNA ensuring only viable cells are counted. With a wide range of specialized assays, the NC-200™ is the perfect cell counter. Sphere cultures or breast cancer cell lines poses great challenges to cell counting, but not for the NC-200™. With our aggregated assay, the NC-200™ counts even the most aggregated cell samples.
Automated cell counter - NucleoCounter NC-200

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The Principle of Cell Aggregation Assays with the NucleoCounter® NC-200™

 

Counting aggregated cells with NC-200 - Software screenshot

Figure 1. Determination of the cell concentration of aggregated MCF7 cells. The nuclei from the cells were freed by lysis using Reagent A100 and Reagent B and analyzed using the Count of Aggregated Cells – A100 and B Assay. The total cell population is stained with DAPI and appears blue. An insert shows a close up of parts of the images. The results are presented at the bottom right and extended results are presented in the result tab page.

Aggregated cells lying on top of each other can be very challenging to count. When using trypan blue to stain cells in a hemocytometer or flow based system using brightfield, counting cells or determining the viability of heavily aggregated cells can be impossible if a clump consists of 10, 20, or even more cells. With the NucleoCounter® NC-200™, counting aggregated cells has never been more precise.

Based on a carefully developed lysis buffer system, ChemoMetec A/S offers an optimized 2-step protocol for counting and determining viability of heavily agggregated cells.

  1. In the first step, all cells are lysed and counted based on a fluorescent DNA stain.
  2. In the second step, only dead cells are counted. Within just 2 minutes, the NucleoCounter® NC-200™ will report the precise viabilty and cell count.

The standard in many industry labs!

With more than 3,000 installations to date, the NucleoCounter® has become the industry standard in laboratories all over the world.
Customers from the USA, Europe, and Asia are using the NucleoCounter® NC-200™ in the production process, also for cancer and stem cell research where precision and reproducibility are of vital importance.

A selection of publications:

1. Influence of oxygen tension on dopaminergic differentiation of human fetal stem cells of midbrain and forebrainorigin Krabbe C, Bak ST, Jensen P, et al. PLoS One. May 2014

2. Characterization of genotoxic response to 15 multiwalled carbon nanotubes with variable physicochemicalproperties including surface functionalizations in the FE1 Jackson P, Kling K, Jensen KA, et al. Environ Mol Mutagen. 2014 epub
3. A 3D sphere culture system containing functional polymers for large-scale human pluripotent stem cellproduction Otsuji TG, Bin J, Yoshimura A, et al. Stem Cell Reports. April 2014

View all publications

Aggregation Assays (.PDF):

Counting Aggregated Mammalian Cells Assay
Counting Aggregated Cells Assay – Reagents A100 and B
Counting Aggregated Mammalian Cells using the Via1-Cassette™

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