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Rapid multiparameter analysis of cell stimulation in mixed lymphocyte culture reactions

F Traganos, AJ Gorski, Z Darzynkiewicz, T Sharpless and MR Melamed

A flow-cytofluorometric method, based on the differential stability of deoxyribonucleic acid versus ribonucleic acid with the metachromatic dye, acridine orange, simultaneously measures the following parameters of stimulation in mixed lymphocyte cultures: (a) number of nonstimulated cells; (b) total number of stimulated lymphocytes; (c) number of stimulated lymphocytes in G1, S and G2 + M phases of the cell cycle; (d) number of macrophages; (e) number of dead cells. The progress of lymphocyte stimulation may also be measured by a parameter representing ribonucleic acid accumulation per cell. The method is rapid, avoids cell rinsing, fixation and centrifugation and is applicable to microcultures. Multiparameter analysis of cell stimulation which provides simultaneous measurements of lymphocyte proliferation and accumulation of ribonucleic acid per cell may prove to be a more sensitive assay of histocompatibility than tests based only on cell proliferation (tritiated thymidine incorporation).

Volume 25, Issue 7, pp. 881-887, 07/01/1977
Copyright © 1977 by The Histochemical Society


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