英语语法分析

However, the relationship between structure and functions of MBL and the mechanisms by which MBL structure gene mutations cause opsonic deficiency are to be clarified.

目前，MBL的结构-功能关系未明，MBL基因突变引起调理吞噬缺损的机制不清，这些均需进一步研究予以阐明。