) relative to the laser's original path is known as forward scatter. The intensity of this forward-scattered light is directly proportional to the , based on Mie scattering theory. Large cells (like monocytes) scatter more light than small cells (like lymphocytes). Height, Width, and Area (FSC-A) Explained
Dead cells have lower FSC-A than live cells (they shrink and lose membrane integrity). However, debris also has low FSC-A. By combining FSC-A with SSC-A (Side Scatter – Area), you can cleanly separate live cells from debris. Be cautious: highly apoptotic cells can fragment, and those fragments will have very low FSC-A. ) relative to the laser's original path is
When a cell intercepts the laser, the detector registers a voltage pulse over time. This pulse can be measured using three metrics: : The maximum intensity of the voltage pulse. Height, Width, and Area (FSC-A) Explained Dead cells