title: A new flow chamber and processing electronics for combined laser and mercury arc illumination in an impulse cytophotometer flow cytometer.
abstract: A flow cytometer of the impulse cytophotometer (ICP)-type has been developed for two-parameter flow cytometry. It uses two different methods of excitation simultaneously: an argon laser beam focused onto the cell stream within a modified flow chamber, and the light of a high pressure mercury (Hg) lamp using Köhler illumination. The two fluorescence signals are collected sequentially by the same photomultiplier tube. The signals are processed on a cell-by-cell basis using new hardwired analog signal processing electronics enabling their accumulation and display as two-parameter frequency distribution histograms.
mesh_terms: D003201:Computers; D003626:Data Display; D005434:Flow Cytometry / Q000295:instrumentation*; D007834:Lasers; D008027:Light; D008628:Mercury
chemical_list: D008628:Mercury