曼氏血吸虫在其发育过程中经历各种形态和代谢的变化 ,以适应各个发育阶段的环境差异 ,这种形态和代谢变化的本质体现在蛋白和基因水平上的精确调节。目前 ,曼氏血吸虫在发育过程中基因表达的调控机制尚不清楚 ,但研究表明一些基因及其结合的顺式作用元件参与了血吸虫基因表达 Schistosoma mansoni undergoes various morphological and metabolic changes during its development to adapt to environmental differences at various developmental stages. The nature of this morphological and metabolic changes is precisely regulated at the protein and gene level. At present, the regulatory mechanism of gene expression during the development of Schistosoma mansoni is not yet clear, however, some studies have shown that some genes and their associated cis-acting elements are involved in gene expression of Schistosoma japonicum