## Abstract Cell surface sialic acid levels were compared for monocytes and macrophages obtained from normal volunteers and breast cancer patients. Equal quantities of sialic acid were found on the monoscytes obtained from normal volunteers and breast cancer patients. Approximately 60% more cell su
Genetic role of rat macrophage cytotoxicity against tumor
β Scribed by Glenn A. Miller; Joseph D. Feldman
- Publisher
- John Wiley and Sons
- Year
- 1976
- Tongue
- French
- Weight
- 635 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0020-7136
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
Macrophages from the Lewis (Le) rat strain are significantly more cytotoxic to a Moloney sarcoma tumor, both in vivo and in vivo, than are macrophages from the Brown Norway (BN) strain. Activity of macrophages from (Le Γ BN) F~1~ rats that are histocompatible with the Moloney sarcoma tumor is directed toward tumor and/or virusβassociated antigens and is expressed as a dominant genetic trait. Experiments with backcross rats suggest that the genetic factors are unrelated to the major histocompatibility locus (AgB) of the rats. BN macrophages, although not active against tumor and/or viral antigens, can become cytotoxic to cells displaying Le alloantigens.
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## Abstract Cytotoxic macrophages have been isolated Moloney sarcoma virus (MSV) tumors induced in uncompromised, immunosuppressed and athymic nude mice. Macrophages from compromised mice were least as active as those from uncompromised mice when tested against the autochthonous MSV target cells. A
## Abstract Mouse bone marrow cells are cultivated in a liquid culture system in the presence of fibroblast conditioned medium. Under these conditions, proliferation of macrophage and granulocyte precursor cells is induced. Cells of a 5βdayβold culture are shown to act as cytotoxic effector cells a
After in vitro stimulation of lymphocytes with syngeneic tumor cells in the presence of interleukin 2 (IL-2). a cytotoxic T-cell response was observed against these spontaneously arising BDX tumors, which are non-immunogenic in the syngeneic host. The response was due to cytotoxic T-cells (CTL), whi