CD4 and germinoma: In germinomas, CD3+, CD4+, CD8+, and Foxp3+ cells infiltrated at 13.49% (range: 0.40%-40.91%), 6.44% (range: 0.37%-15.39%), 4.69% (range: 0.37%-16.99%), and 1.75% (range: 0.06%-7.76%), respectively, with CD4+ T cell levels being significantly higher than CD8+ cells (p=0.010, data not shown).