Besides, results obtained in the IL-6 levels in EAT-bearing animals treated with indomethacin allow us to suggest that the decrease in the release of this cytokine could be related to inhibition of tumor growth, as in tumor-bearing animals there was no increase in IL-6 from the 10th day of tumor growth, when there is tumor growth, with increased numbers of tumor cells and increased production of PGE2. Here, IL6 is linked to neoplasm.