Key points:
- Expression of CD3, CD4, CD8, PD-1 and PD-L1 in mucosal malignant
melanoma tumors.
- Expression of CD8 may different in different lesion locations.
- PD-L1 was correlated with the combined expression of CD4, CD8 and
CD4/CD8.
- Expression of CD8 and CD4 may related with the median progression-free
survival times.
- The expression of CD4 and CD8 in tumor tissue may play a role in the
prognosis of patients.