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MilliporeSigma Expands Line of Guava Flow Cytometers

Optical configurations meet needs of lab, research discipline or individual application

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By: Tim Wright

Editor-in-Chief, Contract Pharma

MilliporeSigma has expanded its line of Guava flow cytometers to include a high-power modulated green laser.

The addition of a 532 nanometer laser expands the detection capabilities of the Guava easyCyte instrument line to enable simultaneous detection of multiple fluorescent proteins. It also offers researchers more spectral choice using fluorescent reagents. More powerful violet, blue and red lasers are now standard in most configurations, meaning the Guava cytometers are sensitive enough to detect subcellular particles as small as viruses.

Since the discovery and isolation of the genes encoding proteins responsible for biological fluorescence, fluorescent proteins (FPs) have changed life science research. Both mutation of the original green FP and discovery of naturally occurring proteins emitting elsewhere in the spectrum have resulted in FPs of many colors. The company’s new Guava easyCyte green laser variants meet the need for instrumentation that allows users to analyze heterogeneous biological tissues and systems in a single experiment. 

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