In order to investigate the effect on the expression of PD-1/PD-L1 and the proportion of CD3+CD4+. CD3+CD8+ T lymphocyte in spleen lymphocytes of mice treated with Chinese herbal compound. the extract of Chinese herbal compound is obtained by traditional boiling method. The mice are given intragastric administration once a day with extract of Chinese herbal compound at low. https://halohealthcarers.shop/product-category/heavy-duty-walkers/