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Heavy cream - I use 40% fat heavy cream (at room temperature, of course), but you can replace it with half-and-half or regular milk

Although preclinical studies in colon cancer models show that IDO1 inhibition can enhance T cell infiltration when combined with antiCTLA-4 therapy (125, 126), clinical trials of IDO1 monotherapy have demonstrated limited efficacy (127), reflecting tumor-specific metabolic adaptations and compensatory mechanisms