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Serum 5-HT comparison in different subgroups (n = 10). *P < 0.05, compared with NCS. †P < 0.05, compared with WMS. 5-HT: 5-hydroxytryptamine; NCS: Negative control subgroup; WMS: Western medicine subgroup; TCMS: Traditional Chinese medicine subgroup; MI: Myocardial infarction; MI + depression: Myocardial infarction combined with depression.
