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Percoll density gradient centrifugation and consecutive flow cytometry do not identify leukocytes and leukocyte subtypes in ejaculate specimens.

Authors
  • Diemer, T1
  • Weidner, W
  • Michelmann, H W
  • Nierste, B
  • Ringert, R H
  • 1 Department of Urology, Georgia-Augusta University, Göttingen, Germany.
Type
Published Article
Journal
Andrologia
Publication Date
1994
Volume
26
Issue
2
Pages
93–96
Identifiers
PMID: 8042775
Source
Medline
License
Unknown

Abstract

This paper describes an attempt to establish a new combined method of leukocyte analysis in human ejaculate by Percoll density gradient centrifugation and consecutive flow cytometry. As a first step, leukocyte separation was performed by Percoll density gradient centrifugation with consecutive enrichment of leukocytes, especially granulocytes, in the 40%/60% and 60%/80% Percoll interfaces. Then these fractions were stained with specific monoclonal antibodies and analysed in a Facscan flow cytometer. Flow cytometric analysis did not demonstrate identifiable leukocyte populations, indicating a questionable cross-reaction with spermatozoal elements. Therefore, the combined technique of Percoll density gradient centrifugation and flow cytometric analysis were considered unsuitable for clinical leukocyte determination.

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