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Photodynamic therapy (PDT) reveals immune modulatory effect. The aim of the study was to evaluate the influence of 5-aminolevulinic acid (ALA) mediated photodynamic effect on secretory activity (MIF, MCP-1) of colon cancer cells in vitro both in normoxia and in hypoxia-like conditions.Two colon cancer cell lines differing in malignancy potential: SW480 (lower grade) and SW620 (higher grade) were used...
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