Controls Archives | Page 2 of 41 | Expert Cytometry | Flow Cytometry Training Controls Archives | Page 2 of 41 | Expert Cytometry | Flow Cytometry Training


Use These 5 Techniques for Super Resolution

When you need better resolution than what can be achieved using a traditional microscope, it can be very intimidating to figure out which machines will work best for your experiment. Super-resolution imaging methods require software reconstruction after image acquisition. This is because multiple images are required, and they need to be combined. Additionally, the points of light need to be reassigned to their true location. Today, we’re going to discuss 5 different super resolution methods their pros and cons. Although Rayleigh Criterion is not broken, these techniques each feature creative ways to get around it.

Read More

Understanding Reproducibility in Flow Cytometry – It’s the Antibodies!

Reproducibility in flow cytometry depends on antibody quality

Reproducibility is key to the scientific method. After the results of a study are published, the community validates the findings and extends them. If the findings are not reproducible, the second step is impossible. With performable experiments increasing in complexity, and the concurrent increase in the cost of equipment and reagents to perform these experiments, it is important to find the best way to maximize the money spent on advancing research. In flow cytometry, there are many places where improvements can be made to increase the consistency and reproducibility of an experiment. The most obvious place is in the instrument, but today’s focus is on the reagents we use to identify cells of interest: Antibodies and fluorochromes.

Read More

3 Components Of Every Flow Cytometer You Don’t Know Enough About

All flow cytometer instruments have a certain 3 components, and the way they are put together will dictate the performance of the system. As a user, you’ll be interacting heavily with these components, so you need to know both what they are and how they work. There are fluidics, optics, and electronics. The fluidics allow you to interact at the right flow rate so that your data keep a tight CV. Then you can run the same flow rate for all your samples, and you won’t have different CVs for different samples. There are also different optics you can use, like PMTs, APDs, and PDs. It’s important to remember the bandpass filters because they indicate the detector on which your signal will be measured. And with a newer generation of instruments, you can actually change out bandpass filters and design the flow cytometer to your specifications – just make sure you cite the specific bandpass filter that you use. Finally, there are electronics, which process the photon into an electronic signal that is ultimately digitized and stored in a file known as the “FCS file.” An analysis can be performed on this file at a later time.

Read More

4 Ways To Analyze Tissues By Flow Cytometry

Did you know that tissues can be measured by flow cytometry? Flow cytometry is the measurement of cellular processes at the whole-cell level. This definition is useful because it includes not only flow cytometry, but any technique that measures at the level of the whole cell. Microscopy, for instance, is a great example of cytometry. But, what can be measured by flow cytometry? For one, tissues with lots of cells. When flow cytometry is practiced, the cells are broken up. Therefore, any cellular interactions within the sample are also broken up. This includes tissues, cell-to-cell contacts in tissues, and virtually any information about the microenvironment. As we continue to discover, the microenvironment can play a dramatic role in cell development, influencing how cells grow and change. This article will discuss how to analyze tissues and microenvironments by flow cytometry.

Read More

Ask These 7 Questions Before Purchasing A Flow Cytometer

I am still convinced that my first cell sorter was possessed. The number of issues that I had with the system remains hard for me to believe, even after all these years.
It had been purchased, in part, from one vendor because the sales rep for a competitor was nowhere to be found. At that time, I admit I wasn’t overly diligent in my research process. Since then, I’ve pinpointed some critical questions that need to be answered before purchasing a new instrument.
At the end of the process, a shiny new instrument will arrive at your facility. Make sure you find time to do a shakedown and validate the system. This is the time to get to know it better, identify quirks and potential issues, and develop training and QC programs. Once your shakedown is complete, you can start adding users and encouraging feedback on the system.

Read More
Flow Cytometry Education And Consulting - Affordable. Effective. Leading Edge.