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Updated: Feb 13, 2026

In Vitro Assay to Study Tumor-macrophage Interaction
Published on: August 1, 2019
Effects on in vitro tumor growth of murine macrophages isolated from sarcoma lines differing in immunogenicity and
Abstract:
Macrophages were isolated from the strongly immunogenic, non-metastasizing FS6 sarcoma transplanted in syngeneic C57BL/6 mice and from a weakly immunogenic, spontaneously metastasizing line (mFS6) of the same tumor. Macrophages isolated from the FS6 sarcoma non-specifically inhibited growth and DNA synthesis of tumor cells in vitro. After culture FS6 macrophages rapidly lost their cytotoxic activity and became capable of non-specifically stimulating tumor growth in vitro. Macrophages obtained from the mFS6 tumor non-specifically enhanced the proliferative activity of tumor target cells and this capacity was maintained when the macrophages were cultured.
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