LEDs are the future of flow cytometry (IMHO). Roche markets Sysmex XE2100 hematology analyzer (basically a flow cytometer with proprietary reagents) which utilizes UV LED as a light source. Regards, Jacek Polski, MD Univ. South Alabama >>> Howard Shapiro <hms@shapirolab.com> 04/27 4:13 PM >>> Bob Hoffman of B-D had an interesting poster at the ISAC Montpellier meeting last May in which he described using high brightness LED's as light sources for flow cytometry. His results with a UV LED on DAPI-stained cells were about as good as mine (also reported at Montpellier and due out in the June issue of Cytometry) with a violet laser diode; the LED is, of course cheaper, but somewhat harder to use, and puts out a good deal less light. -Howard
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