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. 2018 Mar 16;8:67. doi: 10.3389/fonc.2018.00067

Figure 1.

Figure 1

Potential mechanism of arginine metabolism in cancer cells versus immune-infiltrating cells in human melanoma. After arginine enters mammalian cells through the membrane-bound transporters CAT1 and CAT2B, it is metabolized by one of the NO synthase (NOS) enzymes to produce nitric oxide (NO), which is associated with immune suppression and results in the expression of specific markers and functional changes.