IDO1 is highly expressed in macrophages of patients in advanced tumour stages of oral squamous cell carcinoma. 
2023-06-01

Struckmeier, A. K., Radermacher, A., Fehrenz, M., Bellin, T., Alansary, D., Wartenberg, P., … & Horn, D. (2022). Journal of Cancer Research and Clinical Oncology, 1-13.