Journal of Tea Science Research, 2024, Vol.14, No.1, 52-56 http://hortherbpublisher.com/index.php/jtsr 54 Figure 4 Safety (A), IL-6 and MMP-1 (B), and hyaluronic acid and PIP (C) expressions examined in human ex vivo skin model Note: *p<0.05, **p<0.01, ***p<0.001 compared with control untreated group; #; p<0.05 compared with EGCG
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