Figure legends
Table 1. Correlation between the expression of CD4 and CD8 and the
general clinical features of head and neck mucosal melanoma.
Table 2. Correlation between PD-1/PD-L1 and CD4, CD8 expression.
Table 3. Correlation analysis of CD3 and general clinical features of
head and neck mucosal melanoma.
Figure 1. Immunohistochemical staining of tumor samples (X100): A:
score=1 (only perivascular immune infiltration); B: score=2
(perivascular + peritumoral and / or interstitial infiltration): C:
score=3 (diffuse immune cell infiltration).
Figure 2. Expression of CD8 in different primary locations of head and
neck mucosal melanoma.
Figure 3. Correlation between the expression of CD4 and CD8 and
progression-free survival.