Fig. 5
From: Age and gender differences in ACE2 and TMPRSS2 expressions in oral epithelial cells
Qualitative analysis showed that the expression levels of TMPRSS2 and ACE2 in oral mucosa were different by age or gender. A, B Immunohistochemistry of ACE2 and TMPRSS2 in oral mucosal tissues of the relatively younger and relatively elderly females. C, D Immunohistochemistry of ACE2 and TMPRSS2 in oral mucosal tissues of the relatively younger and relatively elderly males. A–D, n = 3. Scale bar, ×200, 100 μm, ×400, 50 μm