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. 1981 Apr;42(4):561–568.

Detection of either rapidly cytolytic macrophages or NK cells in "activated" peritoneal exudates depends on the method of analysis and the target cell type.

J D Gray, C G Brooks, R W Baldwin
PMCID: PMC1458269  PMID: 6263794

Abstract

The nature of the cytotoxic cells present in the peritoneal cavity of rats treated with Bacille Calmette-Guérin (BCG) or Corynebacterium parvum was investigated using a 6 hr chromium release assay and a quantitative method of analysis based on consideration of target-cell killing as an enzyme-substrate reaction. When the results of cell-fractionation experiments were evaluated in terms of recovery of total lytic units and when appropriate target cells (such as sarcoma Mc7) were used, the simultaneous presence of both cytotoxic macrophages and NK cells in peritoneal exudates could be readily demonstrated. With certain other target cells different results were obtained. Thus, with normal thymocytes, normal hepatocytes, or myeloma P3NSI as targets, NK cells were preferentially detected, whereas with leukaemias L5178Y, P815, and EL4 as targets, cytotoxic macrophages were preferentially detected. These findings resolve the previously conflicting reports concerning the nature of cytotoxic cells in activated peritoneal exudates.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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