| http://www.w3.org/ns/prov#value | - of pro-metastatic genes, including VEGF, MMP-9, COX-2, transforming growth factor (TGF)-?? and serum arginase (ARG)-1, as well as progression-inhibitory genes such as interferon (IFN)-??.7In addition to the role of the immune system at mediating stress effects on tumor growth and metastasis, there are now many reports indicating that chronic stress hormones can act directly by stimulating the pro-
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