In flow cytometry, what does side scatter measure?

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Multiple Choice

In flow cytometry, what does side scatter measure?

Side scatter reflects the internal complexity or granularity of a cell. The detector is positioned at a right angle to the laser, so light scattered sideways comes mainly from intracellular structures like granules and organelles. Cells with more internal granularity, such as granulocytes with numerous granules, scatter more light to the side, while simpler cells like lymphocytes scatter less. Forward scatter, by contrast, correlates with overall size. Fluorescence channels report color via labeled antibodies or dyes, not side scatter. Velocity isn’t a standard readout in basic flow cytometry.

Side scatter reflects the internal complexity or granularity of a cell. The detector is positioned at a right angle to the laser, so light scattered sideways comes mainly from intracellular structures like granules and organelles. Cells with more internal granularity, such as granulocytes with numerous granules, scatter more light to the side, while simpler cells like lymphocytes scatter less. Forward scatter, by contrast, correlates with overall size. Fluorescence channels report color via labeled antibodies or dyes, not side scatter. Velocity isn’t a standard readout in basic flow cytometry.

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