三七对免疫系统的多层次影响

输入索引记载，该综述梳理了三七不同活性组分（如皂苷、多糖等）对多种白细胞亚群的免疫调节作用，并比较其机制差异。文献归纳显示，不同组分可能通过调节细胞因子分泌和信号通路呈现特异性免疫效应。

The supplied index reports that this review summarizes the immunomodulatory effects of different active fractions of Panax notoginseng (such as saponins and polysaccharides) on various leukocyte subsets and compares their mechanisms. The literature compilation suggests that different fractions may exhibit specific immune effects through modulating cytokine secretion and signaling pathways.