Dilution techniques for optimum recovery of cryopreserved bone marrow cells.

R. S. Weiner, Carol M Richman, R. A. Yankee

Research output: Contribution to journalArticlepeer-review

9 Scopus citations


Bone marrow granulocyte progenitor cells (CFU-C) were assayed in methyl-cellulose prior to cryopreservation in Dimethylsulfoxide (DMSO) and after thawing and diluting the DMSO. The time of dilution from 10% to 1% DMSO and the temperature of the sample and diluting media were studied. Compared with samples diluted at 0 degrees-4 degrees C, samples which were diluted at 24 degrees C were more viable by Trypan Blue exclusion (p less than .01) and had greater CFU-C growth in vitro (p less than .01). There was no advantage to prolonging dilution time from 10 minutes at a constant rate to 40 minutes using stepwise technique. Recovery of CFU-C at 24 degrees C ranged from 40% to 114% with a mean +/- S.D. of 67% +/- 19.5%. There was evidence that clonogenic cells were selectively preserved under the conditions described.

Original languageEnglish (US)
Pages (from-to)1-6
Number of pages6
JournalExperimental Hematology
Volume7 Suppl 5
StatePublished - 1979
Externally publishedYes

ASJC Scopus subject areas

  • Cancer Research
  • Cell Biology
  • Genetics
  • Hematology
  • Oncology
  • Transplantation


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