Hello Lee, we have recently purchased the fluorogenic cytotoxicity assay from OncoImmunin (CytoxiLux) (see Nature Med. 8:185-189, 2002). I like the idea that you can combine the cytotoxicity assay with multiparametric flow cytometry and characterize the effector cells in mixed populations (such as PBLs). We haven't tried it yet, but it looks very neat, and I wouldn't be surprised if it turns out to be more sensitive than 51Cr. I'll let you know. Cheers, Giovanna ------------------------------------------------ Giovanna Borsellino, M.D., Ph.D. Neuroimmunology IRCCS Santa Lucia Via Ardeatina 354 00179 Roma Italy Tel. ++39.06.51501521 (office) ++39.06.51501552 (lab) Fax ++39.06.51501553 e-mail: g.borsellino@hsantalucia.it gborsel@tin.it
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