Flow Cytometry Standards
P.O. Box 1336
2302 BH Leiden
The Netherlands
Tel.: (+31) 71 5236929
Fax: (+31) 71 5235594
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H.G. Kreysch
Merck KGaA
Biomed Fo/IMO - A25/410 Tel.: (49)6151 - 72 7323
Frankfurter Str. 250 FAX: (49)6151 - 78 1332
D-64271 Darmstadt E-Mail: kreysch@merck.de